Patched up memory leak by balancing two unmatched alloc/release calls.

git-svn-id: http://macvim.googlecode.com/svn/trunk@28 96c4425d-ca35-0410-94e5-3396d5c13a8f

MMBackend.m

@@ -505,6 +505,7 @@ static int eventButtonNumberToVimMouseButton(int buttonNumber);
         NSString *name = [[NSString alloc] initWithBytes:(void*)bytes
                 length:len encoding:NSUTF8StringEncoding];
         s = vim_strsave((char_u*)[name UTF8String]);
+        [name release];
     }
 
     [replyData release];  replyData = nil;

MMVimController.m

@@ -558,6 +558,7 @@ static NSMenuItem *findMenuItemWithTagInMenu(NSMenu *root, int tag)
 
         [title release];
         [tip release];
+        [icon release];
     } else if (RemoveMenuItemMsgID == msgid) {
         const void *bytes = [data bytes];
         int tag = *((int*)bytes);  bytes += sizeof(int);