[lldb/crashlog] Surface error using SBCommandReturnObject argument

This patch allows the crashlog script to surface its errors to lldb by
using the provided SBCommandReturnObject argument.

rdar://95048193

Differential Revision: https://reviews.llvm.org/D129614

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>

lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp

@@ -2888,9 +2888,10 @@ bool ScriptInterpreterPythonImpl::RunScriptBasedCommand(
 
   if (!ret_val)
     error.SetErrorString("unable to execute script function");
-  else
-    error.Clear();
+  else if (cmd_retobj.GetStatus() == eReturnStatusFailed)
+    return false;
 
+  error.Clear();
   return ret_val;
 }
 
@@ -2932,9 +2933,10 @@ bool ScriptInterpreterPythonImpl::RunScriptBasedCommand(
 
   if (!ret_val)
     error.SetErrorString("unable to execute script function");
-  else
-    error.Clear();
+  else if (cmd_retobj.GetStatus() == eReturnStatusFailed)
+    return false;
 
+  error.Clear();
   return ret_val;
 }