Addressing warnings

Author: schmidt-sebastian

Example/Storage/Tests/Integration/FIRStorageIntegrationTests.m

@@ -665,7 +665,6 @@ - (void)testUnauthenticatedResumeGetFileInBackgroundQueue {
 
   __block long resumeAtBytes = 256 * 1024;
   __block long downloadedBytes = 0;
-  __block double computationResult = 0;
 
   FIRStorageDownloadTask *task = [ref writeToFile:fileURL];
 

Firebase/Storage/FIRStorageGetMetadataTask.m

@@ -48,7 +48,7 @@ - (void)enqueue {
   __weak FIRStorageGetMetadataTask *weakSelf = self;
 
   [self dispatchAsync:^() {
-      FIRStorageGetMetadataTask* strongSelf = weakSelf;
+    FIRStorageGetMetadataTask *strongSelf = weakSelf;
 
     if (!strongSelf) {
       return;

Firebase/Storage/FIRStorageTask.m

@@ -26,6 +26,12 @@
 
 @implementation FIRStorageTask
 
+- (instancetype)init {
+  @throw [NSException exceptionWithName:@"Attempt to call unavailable initializer."
+                                 reason:@"init unavailable, use designated initializer"
+                               userInfo:nil];
+}
+
 - (instancetype)initWithReference:(FIRStorageReference *)reference
                    fetcherService:(GTMSessionFetcherService *)service
                     dispatchQueue:(dispatch_queue_t)queue {

Firebase/Storage/FIRStorageUpdateMetadataTask.m

@@ -48,7 +48,7 @@ - (void)enqueue {
   __weak FIRStorageUpdateMetadataTask *weakSelf = self;
 
   [self dispatchAsync:^() {
-      FIRStorageUpdateMetadataTask* strongSelf = weakSelf;
+    FIRStorageUpdateMetadataTask *strongSelf = weakSelf;
 
     if (!strongSelf) {
       return;