avoid a potential crash when removing transfers

NEWS

@@ -1,7 +1,7 @@
 === Transmission 1.80 (In Development) ===
 [http://trac.transmissionbt.com/query?milestone=1.80&group=component&groupdesc=1&order=severity All tickets closed by this release]
 ==== All Platforms ====
-  * Added support for Magnet links
+  * Magnet link support
   * If a torrent has multiple tracker tiers, announce to them in parallel
   * Add optional "incomplete directory" where partial downloads are stored
   * Trackerless torrent support

macosx/MessageWindowController.m

@@ -356,9 +356,13 @@
 
 - (void) clearLog: (id) sender
 {
+    [fLock lock];
+    
     [fMessages removeAllObjects];
     [fDisplayedMessages removeAllObjects];
     [fMessageTable reloadData];
+    
+    [fLock unlock];
 }
 
 - (void) writeToFile: (id) sender

macosx/Torrent.m

@@ -579,7 +579,7 @@ int trashDataFile(const char * filename)
 
 - (NSString *) name
 {
-    return [NSString stringWithUTF8String: fInfo->name];
+    return fInfo->name != NULL ? [NSString stringWithUTF8String: fInfo->name] : @"";
 }
 
 - (BOOL) isFolder
@@ -1753,7 +1753,6 @@ int trashDataFile(const char * filename)
     
     [self createFileList];
     
-    #warning only call when torrent is selected
     [[NSNotificationCenter defaultCenter] postNotificationName: @"ResetInspector" object: self];
 }