Fixed crash if initialization of EGL failed but was tried again later.

The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly
uninitialized data structure if loading the library first failed. A later try to
use EGL then skipped initialization and assumed it was previously successful
because the data structure now already existed. This led to at least one crash
in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was
dereferenced to make a call to eglBindAPI().

debian/control

@@ -0,0 +1,76 @@
+Source: libsdl2
+Priority: optional
+Section: libs
+Maintainer: Debian SDL packages maintainers <pkg-sdl-maintainers@lists.alioth.debian.org>
+Uploaders: Barry deFreese <bdefreese@debian.org>,
+           Sam Hocevar <sho@debian.org>,
+           Manuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>,
+           Felix Geyer <fgeyer@debian.org>,
+           Sam Lantinga <slouken@libsdl.org>
+Standards-Version: 3.9.3
+Build-Depends: debhelper (>= 9),
+               dh-autoreconf,
+               dpkg-dev (>= 1.16.1~),
+               libasound2-dev [linux-any],
+               libgl1-mesa-dev,
+               libpulse-dev,
+               libudev-dev [linux-any],
+               libdbus-1-dev [linux-any],
+               libibus-1.0-dev[linux-any],
+               libusb2-dev [kfreebsd-any],
+               libusbhid-dev [kfreebsd-any],
+               libx11-dev,
+               libxcursor-dev,
+               libxext-dev,
+               libxi-dev,
+               libxinerama-dev,
+               libxrandr-dev,
+               libxss-dev,
+               libxt-dev,
+               libxxf86vm-dev
+Homepage: http://www.libsdl.org/
+
+Package: libsdl2
+Architecture: any
+Multi-Arch: same
+Pre-Depends: ${misc:Pre-Depends}
+Depends: ${misc:Depends},
+         ${shlibs:Depends},
+         libudev0 [linux-any],
+         libdbus-1-3 [linux-any]
+Conflicts: libsdl-1.3-0
+Replaces: libsdl-1.3-0
+Description: Simple DirectMedia Layer
+ SDL is a library that allows programs portable low level access to
+ a video framebuffer, audio output, mouse, and keyboard.
+ .
+ This package contains the shared library, compiled with X11 graphics drivers and OSS, ALSA and PulseAudio sound drivers.
+
+Package: libsdl2-dev
+Section: libdevel
+Architecture: any
+Multi-Arch: same
+Depends: ${misc:Depends},
+         libsdl2 (= ${binary:Version}),
+         libc6-dev,
+         libgl1-mesa-dev
+Conflicts: libsdl-1.3-dev
+Replaces: libsdl-1.3-dev
+Description: Simple DirectMedia Layer development files
+ SDL is a library that allows programs portable low level access to a video
+ framebuffer, audio output, mouse, and keyboard.
+ .
+ This package contains files needed if you wish to use the SDL library in your own programs.
+
+Package: libsdl2-dbg
+Priority: extra
+Section: debug
+Architecture: any
+Multi-Arch: same
+Depends: ${misc:Depends},
+         libsdl2 (= ${binary:Version}),
+Description: Simple DirectMedia Layer debug files
+ SDL is a library that allows programs portable low level access to a video
+ framebuffer, audio output, mouse, and keyboard.
+ .
+ This package contains the debug symbols for the SDL library.