Fix a typo.

Fix a typo that resulted in a harmless message: "7: command not found"

Change-Id: If3643a31085a4fbfaf16b599558f7caa9172d98e
diff --git a/android-configure.sh b/android-configure.sh
index 38af78e..bfc8e3f 100755
--- a/android-configure.sh
+++ b/android-configure.sh
@@ -333,7 +333,7 @@
 	SDL_LIBS=`$SDL_CONFIG --static-libs`
 
 	# quick hack, remove the -D_GNU_SOURCE=1 of some SDL Cflags
-7	# since they break recent Mingw releases
+	# since they break recent Mingw releases
 	SDL_CFLAGS=`echo $SDL_CFLAGS | sed -e s/-D_GNU_SOURCE=1//g`
 
 	log "SDL-probe  : SDL_CFLAGS = $SDL_CFLAGS"