fix(ios): tempFilePath called twice if using CameraUsesGeolocation (#612)

src/ios/CDVCamera.m

@@ -383,6 +383,7 @@ static NSString* toBase64(NSData* data) {
                     }
                     [[self locationManager] startUpdatingLocation];
                 }
+                data = nil;
             }
         }
             break;
@@ -396,15 +397,10 @@ static NSString* toBase64(NSData* data) {
 - (NSString*)tempFilePath:(NSString*)extension
 {
     NSString* docsPath = [NSTemporaryDirectory()stringByStandardizingPath];
-    NSFileManager* fileMgr = [[NSFileManager alloc] init]; // recommended by Apple (vs [NSFileManager defaultManager]) to be threadsafe
-    NSString* filePath;
-
     // unique file name
     NSTimeInterval timeStamp = [[NSDate date] timeIntervalSince1970];
     NSNumber *timeStampObj = [NSNumber numberWithDouble: timeStamp];
-    do {
-        filePath = [NSString stringWithFormat:@"%@/%@%ld.%@", docsPath, CDV_PHOTO_PREFIX, [timeStampObj longValue], extension];
-    } while ([fileMgr fileExistsAtPath:filePath]);
+    NSString* filePath = [NSString stringWithFormat:@"%@/%@%ld.%@", docsPath, CDV_PHOTO_PREFIX, [timeStampObj longValue], extension];
 
     return filePath;
 }