Replace 0 in nullptr

Change-Id: I517a036ccf41c377fee78f841f474b72998bd9ac
Reviewed-on: https://gerrit.libreoffice.org/73028
Tested-by: Jenkins
Reviewed-by: Michael Stahl <Michael.Stahl@cib.de>

bridges/source/cpp_uno/msvc_win32_intel/cpp2uno.cxx

@@ -55,8 +55,8 @@ static inline typelib_TypeClass cpp2uno_call(
         TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
     }
 
-    void * pUnoReturn = 0;
-    void * pCppReturn = 0; // complex return ptr: if != 0 && != pUnoReturn, reconversion need
+    void * pUnoReturn = nullptr;
+    void * pCppReturn = nullptr; // complex return ptr: if != 0 && != pUnoReturn, reconversion need
 
     if (pReturnTypeDescr)
     {

bridges/source/cpp_uno/msvc_win32_intel/uno2cpp.cxx

@@ -150,7 +150,7 @@ static void cpp_call(
     TYPELIB_DANGER_GET( &pReturnTypeDescr, pReturnTypeRef );
     assert(pReturnTypeDescr);
 
-    void * pCppReturn = 0; // if != 0 && != pUnoReturn, needs reconversion
+    void * pCppReturn = nullptr; // if != 0 && != pUnoReturn, needs reconversion
 
     if (pReturnTypeDescr)
     {