CMakePM: Include the last error/warning line from call stack

This was the first one reported by CMake, and we need to make sure it's
also included.

Change-Id: I5becfffc1afb35a4f69fd26d8563aa1ea6eaea60
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/plugins/cmakeprojectmanager/cmakeparser.h

@@ -50,6 +50,7 @@ private:
         QString function;
     };
     std::optional<QList<CallStackLine>> m_callStack;
+    CallStackLine m_errorOrWarningLine;
 };
 
 } // CMakeProjectManager