Merge pull request #13014 from jloutsch/fix/download-resume-corruption

Fix download resume corruption when server returns HTTP 200

app/src/main/java/us/shandian/giga/get/DownloadRunnableFallback.java

@@ -85,6 +85,7 @@ public class DownloadRunnableFallback extends Thread {
             if (mMission.unknownLength || mConn.getResponseCode() == 200) {
                 // restart amount of bytes downloaded
                 mMission.done = mMission.offsets[mMission.current] - mMission.offsets[0];
+                start = 0; // reset position to avoid writing at wrong offset
             }
 
             mF = mMission.storage.getStream();