Update OCMock to 3.1.5

third_party/ocmock/OCMock/OCMBlockCaller.m

-//---------------------------------------------------------------------------------------
-//      $Id$
-//  Copyright (c) 2010 by Mulle Kybernetik. See License file for details.
-//---------------------------------------------------------------------------------------
+/*
+ *  Copyright (c) 2010-2015 Erik Doernenburg and contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License"); you may
+ *  not use these files except in compliance with the License. You may obtain
+ *  a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ */
 
 #import "OCMBlockCaller.h"
 
-#if NS_BLOCKS_AVAILABLE
 
 @implementation OCMBlockCaller
 
 -(id)initWithCallBlock:(void (^)(NSInvocation *))theBlock 
 {
-        self = [super init];
-        block = [theBlock copy];
+    if ((self = [super init]))
+    {
+        block = [theBlock copy];
+    }
+    
         return self;
 }
 
 -(void)dealloc 
 {
         [block release];
         [super dealloc];
 }
 
 - (void)handleInvocation:(NSInvocation *)anInvocation
 {
-        block(anInvocation);
+    if (block != nil)
+    {
+        block(anInvocation);
+    }
 }
 
 @end
-
-#endif