Grammar fixes "is doesn't" => "doesn't".

dlls/msgsm32.acm/msgsm32.c

@@ -381,7 +381,7 @@ static	LRESULT	GSM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
         return MMSYSERR_NOMEM;
     if (pgsm_option(r, GSM_OPT_WAV49, &used) < 0)
     {
-        FIXME("Your libgsm library is doesn't support GSM_OPT_WAV49\n");
+        FIXME("Your libgsm library doesn't support GSM_OPT_WAV49\n");
         FIXME("Please recompile libgsm with WAV49 support\n");
         pgsm_destroy(r);
         return MMSYSERR_NOTSUPPORTED;

dlls/riched20/editor.c

@@ -3276,7 +3276,7 @@ LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
     if (bRtf) {
       ME_StreamInRTFString(editor, bSelection, (char *)lParam);
       if (bSelection) {
-        /* FIXME: The length returned is doesn't include the rtf control
+        /* FIXME: The length returned doesn't include the rtf control
          * characters, only the actual text. */
         len = lParam ? strlen((char *)lParam) : 0;
       }