WaE: VarDecl, use "bool" instead of "sal_Bool" [loplugin:salbool]

This likely is a false warning or over-enthusiasm in the salbool plug-in, but
on the other hand, I don't understand why the recently added case needs to use
different coding idioms from the preceding ones in the function? So make the
code more uniform.

Change-Id: I518022c59f6bd54740676cba95670e78b9a40d19

sw/source/uibase/uno/SwXDocumentSettings.cxx

@@ -1248,9 +1248,8 @@ void SwXDocumentSettings::_getSingleValue( const comphelper::PropertyInfo & rInf
         break;
         case HANDLE_PROP_LINE_SPACING_SHRINKS_FIRST_LINE:
         {
-            sal_Bool const bTmp(mpDoc->getIDocumentSettingAccess().get(
-                IDocumentSettingAccess::PROP_LINE_SPACING_SHRINKS_FIRST_LINE));
-            rValue <<= bTmp;
+            sal_Bool bTmp = mpDoc->getIDocumentSettingAccess().get( IDocumentSettingAccess::PROP_LINE_SPACING_SHRINKS_FIRST_LINE);
+            rValue.setValue( &bTmp, ::getBooleanCppuType() );
         }
         break;
         default: