coverity#982817 Out-of-bounds access

Not sure if it just is coverity's parser that get confused or if the
compiler can also be confused in that case.. but it does not
hurt to be explicit, just in case.

Change-Id: Iba9df7122584272645e7fb241c3f5fd2ed4481d1
Reviewed-on: https://gerrit.libreoffice.org/2250Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>
Tested-by: Norbert Thiebaud <nthiebaud@gmail.com>

toolkit/source/awt/vclxtoolkit.cxx

@@ -907,7 +907,7 @@ Window* VCLXToolkit::ImplCreateWindow( VCLXWindow** ppNewComp,
 
                                 rtl_getGlobalProcessId( (sal_uInt8*)processID );
 
-                                ::com::sun::star::uno::Sequence<sal_Int8> processIdSeq(processID, 16);
+                                ::com::sun::star::uno::Sequence<sal_Int8> processIdSeq((sal_Int8*)processID, 16);
 
                                 ::com::sun::star::uno::Any anyHandle = xSystemDepParent->getWindowHandle(processIdSeq, SYSTEM_DEPENDENT_TYPE);