Make the error message when we time out waiting for debugserver to reply to the qLaunchSuccess packet less cryptic.

<rdar://problem/11754744>

git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@159373 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp b/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
index b08350a..cf527e2 100644
--- a/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
+++ b/source/Plugins/Process/gdb-remote/GDBRemoteCommunicationClient.cpp
@@ -760,7 +760,7 @@
     }
     else
     {
-        error_str.assign ("failed to send the qLaunchSuccess packet");
+        error_str.assign ("timed out waiting for app to launch");
     }
     return false;
 }