crash_dump: populate uid field.

Bug: http://b/132359035
Test: manual
Change-Id: I99d8446024fc2d9395132dea45f03317976a9b62
(cherry picked from commit 5df504c5f8)

debuggerd/crash_dump.cpp

@@ -463,6 +463,7 @@ int main(int argc, char** argv) {
       ThreadInfo info;
       info.pid = target_process;
       info.tid = thread;
+      info.uid = getuid();
       info.process_name = process_name;
       info.thread_name = get_thread_name(thread);