Make an autorelease pool, otherwise we're leaking memory.

svn path=/trunk/matplotlib/; revision=8936

Author: mdehoon

src/_macosx.m

@@ -4705,8 +4705,10 @@ -(void)save_figure:(id)sender
     NSText* messagebox = self->messagebox;
 
     if (messagebox)
-    {   NSString* text = [NSString stringWithUTF8String: message];
+    {   NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
+        NSString* text = [NSString stringWithUTF8String: message];
         [messagebox setString: text];
+        [pool release];
     }
 
     Py_INCREF(Py_None);