Add ALC_EXT_capture to present OpenAL extensions

The extension is already implemented, however, alcIsExtensionPresent
wasn't reporting it as present.

Author: inolen

src/lib/libopenal.js

@@ -25,6 +25,7 @@ var LibraryOpenAL = {
 
     ALC_EXTENSIONS: {
       // TODO: 'ALC_EXT_EFX': true,
+      'ALC_EXT_capture': true,
       'ALC_SOFT_pause_device': true,
       'ALC_SOFT_HRTF': true
     },

test/openal/test_openal_extensions.c

@@ -17,8 +17,9 @@
 #include <AL/alc.h>
 #include <AL/alext.h>
 
-#define NUM_ALC_EXTENSIONS 2
+#define NUM_ALC_EXTENSIONS 3
 static const ALCchar *alc_extensions[NUM_ALC_EXTENSIONS] = {
+  "ALC_EXT_capture",
   "ALC_SOFT_pause_device",
   "ALC_SOFT_HRTF",
 };