Fixed empty parameter list in signatures of internal functions.

src/joystick/android/SDL_sysjoystick.c

@@ -363,12 +363,14 @@ SDL_SYS_JoystickInit(void)
 
 }
 
-int SDL_SYS_NumJoysticks()
+int
+SDL_SYS_NumJoysticks(void)
 {
     return numjoysticks;
 }
 
-void SDL_SYS_JoystickDetect()
+void
+SDL_SYS_JoystickDetect(void)
 {
     /* Support for device connect/disconnect is API >= 16 only,
      * so we poll every three seconds

src/joystick/bsd/SDL_sysjoystick.c

@@ -204,12 +204,14 @@ SDL_SYS_JoystickInit(void)
     return (SDL_SYS_numjoysticks);
 }
 
-int SDL_SYS_NumJoysticks()
+int
+SDL_SYS_NumJoysticks(void)
 {
     return SDL_SYS_numjoysticks;
 }
 
-void SDL_SYS_JoystickDetect()
+void
+SDL_SYS_JoystickDetect(void)
 {
 }
 

src/joystick/darwin/SDL_sysjoystick.c

@@ -580,7 +580,7 @@ SDL_SYS_JoystickInit(void)
 
 /* Function to return the number of joystick devices plugged in right now */
 int
-SDL_SYS_NumJoysticks()
+SDL_SYS_NumJoysticks(void)
 {
     recDevice *device = gpDeviceList;
     int nJoySticks = 0;
@@ -598,7 +598,7 @@ SDL_SYS_NumJoysticks()
 /* Function to cause any queued joystick insertions to be processed
  */
 void
-SDL_SYS_JoystickDetect()
+SDL_SYS_JoystickDetect(void)
 {
     recDevice *device = gpDeviceList;
     while (device) {

src/joystick/dummy/SDL_sysjoystick.c

@@ -37,12 +37,14 @@ SDL_SYS_JoystickInit(void)
     return 0;
 }
 
-int SDL_SYS_NumJoysticks()
+int
+SDL_SYS_NumJoysticks(void)
 {
     return 0;
 }
 
-void SDL_SYS_JoystickDetect()
+void
+SDL_SYS_JoystickDetect(void)
 {
 }
 

src/joystick/emscripten/SDL_sysjoystick.c

@@ -240,12 +240,14 @@ JoystickByIndex(int index)
     return item;
 }
 
-int SDL_SYS_NumJoysticks()
+int
+SDL_SYS_NumJoysticks(void)
 {
     return numjoysticks;
 }
 
-void SDL_SYS_JoystickDetect()
+void
+SDL_SYS_JoystickDetect(void)
 {
 }
 

src/joystick/haiku/SDL_haikujoystick.cc

@@ -84,12 +84,12 @@ extern "C"
         return (SDL_SYS_numjoysticks);
     }
 
-    int SDL_SYS_NumJoysticks()
+    int SDL_SYS_NumJoysticks(void)
     {
         return SDL_SYS_numjoysticks;
     }
 
-    void SDL_SYS_JoystickDetect()
+    void SDL_SYS_JoystickDetect(void)
     {
     }
 

src/joystick/iphoneos/SDL_sysjoystick.m

@@ -326,12 +326,14 @@ SDL_SYS_JoystickInit(void)
     return numjoysticks;
 }
 
-int SDL_SYS_NumJoysticks()
+int
+SDL_SYS_NumJoysticks(void)
 {
     return numjoysticks;
 }
 
-void SDL_SYS_JoystickDetect()
+void
+SDL_SYS_JoystickDetect(void)
 {
 }
 

src/joystick/linux/SDL_sysjoystick.c

@@ -348,12 +348,14 @@ SDL_SYS_JoystickInit(void)
 #endif
 }
 
-int SDL_SYS_NumJoysticks()
+int
+SDL_SYS_NumJoysticks(void)
 {
     return numjoysticks;
 }
 
-void SDL_SYS_JoystickDetect()
+void
+SDL_SYS_JoystickDetect(void)
 {
 #if SDL_USE_LIBUDEV
     SDL_UDEV_Poll();

src/joystick/psp/SDL_sysjoystick.c

@@ -132,12 +132,12 @@ int SDL_SYS_JoystickInit(void)
     return 1;
 }
 
-int SDL_SYS_NumJoysticks()
+int SDL_SYS_NumJoysticks(void)
 {
     return 1;
 }
 
-void SDL_SYS_JoystickDetect()
+void SDL_SYS_JoystickDetect(void)
 {
 }
 

src/joystick/windows/SDL_mmjoystick.c

@@ -183,12 +183,14 @@ SDL_SYS_JoystickInit(void)
     return (SDL_SYS_numjoysticks);
 }
 
-int SDL_SYS_NumJoysticks()
+int
+SDL_SYS_NumJoysticks(void)
 {
     return SDL_SYS_numjoysticks;
 }
 
-void SDL_SYS_JoystickDetect()
+void
+SDL_SYS_JoystickDetect(void)
 {
 }
 

src/joystick/windows/SDL_windowsjoystick.c

@@ -307,7 +307,7 @@ SDL_SYS_JoystickInit(void)
 
 /* return the number of joysticks that are connected right now */
 int
-SDL_SYS_NumJoysticks()
+SDL_SYS_NumJoysticks(void)
 {
     int nJoysticks = 0;
     JoyStick_DeviceData *device = SYS_Joystick;
@@ -321,7 +321,7 @@ SDL_SYS_NumJoysticks()
 
 /* detect any new joysticks being inserted into the system */
 void
-SDL_SYS_JoystickDetect()
+SDL_SYS_JoystickDetect(void)
 {
     JoyStick_DeviceData *pCurList = NULL;