Andrew Moise filed bug report #1847501

(http://curl.haxx.se/bug/view.cgi?id=1847501) and pointed out a memcpy()
that should be memmove() in the convert_lineends() function.

lib/sendf.c

@@ -160,7 +160,7 @@ static size_t convert_lineends(struct SessionHandle *data,
     if(*startPtr == '\n') {
       /* This block of incoming data starts with the
          previous block's LF so get rid of it */
-      memcpy(startPtr, startPtr+1, size-1);
+      memmove(startPtr, startPtr+1, size-1);
       size--;
       /* and it wasn't a bare CR but a CRLF conversion instead */
       data->state.crlf_conversions++;