fixed circular reference leak + 1 potential leak

@@ -96,6 +96,7 @@ static CGImageRef _markerBlue = nil;
 	NSString *path = [[NSBundle mainBundle] pathForResource:filename ofType:@"png"];
 	CGDataProviderRef dataProvider = CGDataProviderCreateWithFilename([path UTF8String]);
 	CGImageRef image = CGImageCreateWithPNGDataProvider(dataProvider, NULL, FALSE, kCGRenderingIntentDefault);
+	[NSMakeCollectable(image) autorelease];
 	CGDataProviderRelease(dataProvider);
 	
 	return image;

@@ -17,7 +17,7 @@
 	RMMapContents *contents;
 }
 
-@property (retain, readwrite)  RMMapContents *contents;
+@property (assign, readwrite)  RMMapContents *contents;
 
 - (id)initWithContents:(RMMapContents *)mapContents;
 

@@ -77,6 +77,12 @@ static RMMarkerStyles *sharedMarkerStyles = nil;
     return self;
 }
 
+- (void)dealloc
+{
+	[styles release];
+	[super dealloc];
+}
+
 - (void) addStyle: (RMMarkerStyle*) style withName: (NSString*) name
 {
 	[styles setObject:style	forKey:name];