EXT-8596: FIXED: crash at LLTextureFetchWorker::doWork(int) [secondlife-bin...

EXT-8596: FIXED: crash at LLTextureFetchWorker::doWork(int) [secondlife-bin lltexturefetch.cpp] line 1061

indra/newview/lltexturefetch.cpp

@@ -872,10 +872,17 @@ bool LLTextureFetchWorker::doWork(S32 param)
 				cur_size = mFormattedImage->getDataSize(); // amount of data we already have
 				if (mFormattedImage->getDiscardLevel() == 0)
 				{
-					// We already have all the data, just decode it
-					mLoadedDiscard = mFormattedImage->getDiscardLevel();
-					mState = DECODE_IMAGE;
-					return false;
+					if(cur_size > 0)
+					{
+						// We already have all the data, just decode it
+						mLoadedDiscard = mFormattedImage->getDiscardLevel();
+						mState = DECODE_IMAGE;
+						return false;
+					}
+					else
+					{
+						return true ; //abort.
+					}
 				}
 			}
 			mRequestedSize = mDesiredSize;
@@ -982,6 +989,17 @@ bool LLTextureFetchWorker::doWork(S32 param)
 				}
 			}
 			
+			llassert_always(mBufferSize == cur_size + mRequestedSize);
+			if(!mBufferSize)//no data received.
+			{
+				delete[] mBuffer; 
+				mBuffer = NULL;
+
+				//abort.
+				mState = DONE;
+				return true;
+			}
+
 			if (mFormattedImage.isNull())
 			{
 				// For now, create formatted image based on extension
@@ -992,8 +1010,7 @@ bool LLTextureFetchWorker::doWork(S32 param)
 					mFormattedImage = new LLImageJ2C; // default
 				}
 			}
-			
-			llassert_always(mBufferSize == cur_size + mRequestedSize);
+						
 			if (mHaveAllData && mRequestedDiscard == 0) //the image file is fully loaded.
 			{
 				mFileSize = mBufferSize;
@@ -1052,7 +1069,12 @@ bool LLTextureFetchWorker::doWork(S32 param)
 		
 		if (mFormattedImage->getDataSize() <= 0)
 		{
-			llerrs << "Decode entered with invalid mFormattedImage. ID = " << mID << llendl;
+			//llerrs << "Decode entered with invalid mFormattedImage. ID = " << mID << llendl;
+			
+			//abort, don't decode
+			mState = DONE;
+			setPriority(LLWorkerThread::PRIORITY_LOW | mWorkPriority);
+			return true;
 		}
 		if (mLoadedDiscard < 0)
 		{