minor os/2 stuff merged from the bitwiseworks' fork

(cosmetics only.)
(cherry picked from commit b58557a3a60de6e945536c41147061afa8468286)

configure

@@ -29640,7 +29640,7 @@ printf "%s\n" "#define SDL_VIDEO_DRIVER_OS2 1" >>confdefs.h
 
             SOURCES="$SOURCES $srcdir/src/video/os2/*.c"
             have_video=yes
-            SUMMARY_video="${SUMMARY_video} os/2"
+            SUMMARY_video="${SUMMARY_video} OS/2"
         fi
         # Set up files for the audio library
         if test x$enable_audio = xyes; then
@@ -29649,7 +29649,7 @@ printf "%s\n" "#define SDL_AUDIO_DRIVER_OS2 1" >>confdefs.h
 
             SOURCES="$SOURCES $srcdir/src/audio/os2/*.c"
             have_audio=yes
-            SUMMARY_audio="${SUMMARY_audio} os/2"
+            SUMMARY_audio="${SUMMARY_audio} OS/2"
             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lmmpm2"
         fi
         # Set up files for the thread library

configure.ac

@@ -4625,14 +4625,14 @@ dnl BeOS support removed after SDL 2.0.1. Haiku still works.  --ryan.
             AC_DEFINE(SDL_VIDEO_DRIVER_OS2, 1, [ ])
             SOURCES="$SOURCES $srcdir/src/video/os2/*.c"
             have_video=yes
-            SUMMARY_video="${SUMMARY_video} os/2"
+            SUMMARY_video="${SUMMARY_video} OS/2"
         fi
         # Set up files for the audio library
         if test x$enable_audio = xyes; then
             AC_DEFINE(SDL_AUDIO_DRIVER_OS2, 1, [ ])
             SOURCES="$SOURCES $srcdir/src/audio/os2/*.c"
             have_audio=yes
-            SUMMARY_audio="${SUMMARY_audio} os/2"
+            SUMMARY_audio="${SUMMARY_audio} OS/2"
             EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lmmpm2"
         fi
         # Set up files for the thread library

src/audio/os2/SDL_os2audio.c

@@ -412,8 +412,8 @@ static int OS2_OpenDevice(_THIS, const char *devname)
     ULONG                 ulRC;
     ULONG                 ulIdx;
     BOOL                  new_freq;
-    SDL_bool              iscapture = _this->iscapture;
     ULONG                 ulHandle = (ULONG)_this->handle;
+    SDL_bool              iscapture = _this->iscapture;
 
     new_freq = FALSE;
     SDL_zero(stMCIAmpOpen);