Fix WOKStep_Extract::Execute

This step did put garbage into generated file, because a pointer was used
after it has been freed.
Closes: #501352

diff --git a/ros/src/CPPExt/CPPExt.cxx b/ros/src/CPPExt/CPPExt.cxx
index 4d96c47..a651607 100644
--- a/ros/src/CPPExt/CPPExt.cxx
+++ b/ros/src/CPPExt/CPPExt.cxx
@@ -397,7 +397,8 @@ void CPP_BuildMethod(const Handle(MS_MetaSchema)& aMeta,
     const Handle(TCollection_HAsciiString)& aTypeName=retType->TypeName();
     pTypeName=(char *)aTypeName->ToCString();
     //
-    pTypeRet=(char *)CPP_BuildType(aMeta,aTypeName)->ToCString();
+    const Handle(TCollection_HAsciiString)& aTypeRet=CPP_BuildType(aMeta,aTypeName);
+    pTypeRet=(char *)aTypeRet->ToCString();
     //
     //modified by NIZNHY-PKV Mon May  5 15:10:12 2008f
     if (m->IsPtrReturn()) {
diff --git a/ros/src/WOKUnix/WOKUnix_Process.cxx b/ros/src/WOKUnix/WOKUnix_Process.cxx
index dd6caf6..fa649c7 100644
--- a/ros/src/WOKUnix/WOKUnix_Process.cxx
+++ b/ros/src/WOKUnix/WOKUnix_Process.cxx
@@ -373,6 +373,6 @@ void WOKUnix_Process::Kill()
 void WOKUnix_Process::Destroy()
 {
  Kill();
- delete myargv;
+ delete [] myargv;
 }
 #endif