Apply fix from SNOW-792 for textures rebaking over and over.

indra/newview/lltexturefetch.cpp

@@ -1382,6 +1382,12 @@ bool LLTextureFetchWorker::doWork(S32 param)
 						setPriority(LLWorkerThread::PRIORITY_HIGH | mWorkPriority);
 						return false ;
 					}
+					else
+					{
+						// UDP is not an option, we are dead
+						resetFormattedData();
+						return true; // failed
+					}
 				}
 				else if (mGetStatus == HTTP_SERVICE_UNAVAILABLE)
 				{
@@ -1404,7 +1410,9 @@ bool LLTextureFetchWorker::doWork(S32 param)
 
 				if (mHTTPFailCount >= max_attempts)
 				{
-					if (cur_size > 0)
+					// Make max_attempts attempt at decoding what data we have,
+                    // then bail forever on this image
+					if (cur_size > 0 && (mHTTPFailCount < (max_attempts+1)) )
 					{
 						// Use available data
 						mLoadedDiscard = mFormattedImage->getDiscardLevel();
@@ -1413,9 +1421,21 @@ bool LLTextureFetchWorker::doWork(S32 param)
 					}
 						else
 						{
-							resetFormattedData();
+    						//roll back to try UDP
-						mState = DONE;
+    						if(mCanUseNET)
-							return true; // failed
+    						{
+    							mState = INIT ;
+    							mCanUseHTTP = false ;
+    							setPriority(LLWorkerThread::PRIORITY_HIGH | mWorkPriority);
+    							return false ;
+    						}
+    						else
+    						{
+    							// UDP is not an option, we are dead
+    							resetFormattedData();
+                                mState = DONE;
+    							return true; // failed
+    						}
 						}
 					}
 				else