improvements

iOSClient/Utility/CCExifGeo.m

@@ -53,10 +53,18 @@
     
     NSDate *date = [NSDate new];
     
+    if (![[NSFileManager defaultManager] fileExistsAtPath:[NSString stringWithFormat:@"%@/%@", directoryUser, metadata.fileID]])
+        return;
+
     NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/%@", directoryUser, metadata.fileID]];
-    
+
     CGImageSourceRef originalSource =  CGImageSourceCreateWithURL((CFURLRef) url, NULL);
+    if (!originalSource)
+        return;
+    
     CFDictionaryRef imageProperties = CGImageSourceCopyPropertiesAtIndex(originalSource, 0, NULL);
+    if (!imageProperties)
+        return;
     
     CFDictionaryRef tiff = CFDictionaryGetValue(imageProperties, kCGImagePropertyTIFFDictionary);
     CFDictionaryRef gps = CFDictionaryGetValue(imageProperties, kCGImagePropertyGPSDictionary);