Fixing memory leaks found by static analyzer

Author: mattt

AFGowallaAPI.m

@@ -82,7 +82,7 @@ + (void)clearAuthorizationHeader {
 
 + (NSMutableURLRequest *)requestWithMethod:(NSString *)method path:(NSString *)path parameters:(NSDictionary *)parameters {	
 	NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
-	NSMutableDictionary *headers = [_defaultHeaders mutableCopy];
+	NSMutableDictionary *headers = [NSMutableDictionary dictionaryWithDictionary:_defaultHeaders];
 	NSURL *url = nil;
 
 	NSMutableArray *mutableParameterComponents = [NSMutableArray array];

AFHTTPOperation.m

@@ -89,7 +89,7 @@ - (void)finishWithError:(NSError *)error {
         [userInfo setValue:[[self.lastRequest URL] absoluteString] forKey:NSURLErrorFailingURLStringErrorKey];
         [userInfo setValue:data forKey:AFHTTPOperationParsedDataErrorKey];
 
-        error = [[NSError alloc] initWithDomain:NSURLErrorDomain code:[self.lastResponse statusCode] userInfo:userInfo];
+        error = [[[NSError alloc] initWithDomain:NSURLErrorDomain code:[self.lastResponse statusCode] userInfo:userInfo] autorelease];
 
         if (self.callback.errorBlock) {
             self.callback.errorBlock(self.lastRequest, self.lastResponse, error);

AFImageRequestOperation.m

@@ -33,7 +33,7 @@ static inline CGSize kAFImageRequestRoundedCornerRadii(CGSize imageSize) {
 }
 
 @implementation AFImageRequestOperation
-@synthesize callback;
+@synthesize callback = _callback;
 
 - (id)initWithRequest:(NSURLRequest *)someRequest callback:(AFImageRequestOperationCallback *)someCallback {
 	self = [super initWithRequest:someRequest];
@@ -74,8 +74,8 @@ - (void)finishWithError:(NSError *)error {
 	[super finishWithError:error];
 
     if (error) {
-        if (callback.errorBlock) {
-			callback.errorBlock(error);
+        if (self.callback.errorBlock) {
+			self.callback.errorBlock(error);
 		}
 
         return;