[PATCH] common: fixed a minor bug in ExpandPath of tyrutils

Signed-off-by: O.Sezer <sezero@users.sourceforge.net>
Signed-off-by: Tyrann <tyrann@disenchant.net>

common/cmdlib.c

@@ -120,7 +120,7 @@ ExpandPath(char *path)
 {
     static char full[1024];
 
-    if (!qdir)
+    if (!qdir[0])
 	Error("ExpandPath called without qdir set");
     if (path[0] == '/' || path[0] == '\\' || path[1] == ':')
 	return path;