Address review comments from Justin Bogner.

- raise without arguments is preserving the backtrace
- move the call to terminate lldb to the exit handler

llvm-svn: 219618

debuginfo-tests/llgdb.py

@@ -142,14 +142,14 @@ NOTE: There are several resons why this may happen:
             print frame.EvaluateExpression(' '.join(cmd[1:]))
 
         elif re.match('^q|(quit)$', cmd[0]):
-            lldb.SBDebugger_Terminate()
             sys.exit(0)
 
         else:
             print debugger.HandleCommand(' '.join(cmd))
 
-    except SystemExit, e:
-        raise e
+    except SystemExit:
+        lldb.SBDebugger_Terminate()
+        raise
     except:
         print 'Could not handle the command "%s"' % ' '.join(cmd)