midi mapper fix

[eric pouech]

Andi pointed out that the midi mapper was crashing when no midi out
devices were present
this patch fixes it

A+
-- 
---------------
Eric Pouech (http://perso.wanadoo.fr/eric.pouech/)
"The future will be better tomorrow", Vice President Dan Quayle
-------------- next part --------------
Name: midimap
ChangeLog: fails mapper opening when no midi out devices are present
GenDate: 2001/06/17 14:22:22 UTC
ModifiedFiles: dlls/winmm/midimap/midimap.c
AddedFiles: 
===================================================================
RCS file: /usr/share/cvs/cvsroot/wine/wine/dlls/winmm/midimap/midimap.c,v
retrieving revision 1.8
diff -u -u -r1.8 midimap.c
--- dlls/winmm/midimap/midimap.c	2001/05/22 19:20:53	1.8
+++ dlls/winmm/midimap/midimap.c	2001/06/17 14:20:40
@@ -117,7 +117,10 @@
 	ERR("Registry glitch: couldn't find midi out (%s)\n", port);
 	dev = 0;
     }
-    
+
+    /* this is necessary when no midi out ports are present */
+    if (dev >= numMidiOutPorts)
+	return FALSE;
     /* sets default */
     for (i = 0; i < 16; i++) mom->ChannelMap[i] = &midiOutPorts[dev];
 
@@ -220,7 +223,7 @@
     }
     RegCloseKey(hKey);
 
-    if (TRACE_ON(msacm)) 
+    if (ret && TRACE_ON(msacm)) 
     {
 	unsigned	i;