Fix bug in abort message processing.

Bug: 11156592
Change-Id: I4b82e7be5d7fccd167f6c52f78a5af3d3a553779
diff --git a/debuggerd/tombstone.c b/debuggerd/tombstone.c
index 1a6066e..24debf4 100644
--- a/debuggerd/tombstone.c
+++ b/debuggerd/tombstone.c
@@ -621,7 +621,6 @@
     if (!backtrace_read_word(backtrace, address, &data)) {
       break;
     }
-    data = 0;
     address += sizeof(uint32_t);
 
     if ((*p++ = (data >>  0) & 0xff) == 0) {