Fix memory leaks

GLFileView.m

@@ -78,7 +78,7 @@
 		[script callWebScriptMethod:@"showFile" withArguments:[NSArray arrayWithObject:fileTxt]];
 	}
 	
-#ifdef DEBUG 
+#if 0
 	NSString *dom=[[[[view mainFrame] DOMDocument] documentElement] outerHTML];
 	NSString *tmpFile=@"~/tmp/test.html";
 	[dom writeToFile:[tmpFile stringByExpandingTildeInPath] atomically:true encoding:NSUTF8StringEncoding error:nil];
@@ -151,6 +151,13 @@
 	[self showFile];
 }
 
+- (void)closeView
+{
+	[historyController.treeController removeObserver:self forKeyPath:@"selection"];
+
+	[super closeView];
+}
+
 - (NSString *) parseHTML:(NSString *)txt
 {
 	txt=[txt stringByReplacingOccurrencesOfString:@"&" withString:@"&"];