fix some warnings
diff --git a/src/mesa/main/api_arrayelt.c b/src/mesa/main/api_arrayelt.c
index f42854a..b375828 100644
--- a/src/mesa/main/api_arrayelt.c
+++ b/src/mesa/main/api_arrayelt.c
@@ -791,7 +791,7 @@
/* generic attributes */
for (at = actx->attribs; at->func; at++) {
const GLubyte *src = at->array->BufferObj->Data
- + (GLuint) at->array->Ptr
+ + (unsigned long) at->array->Ptr
+ elt * at->array->StrideB;
at->func( at->index, src );
}
@@ -799,7 +799,7 @@
/* conventional arrays */
for (aa = actx->arrays; aa->func ; aa++) {
const GLubyte *src = aa->array->BufferObj->Data
- + (GLuint) aa->array->Ptr
+ + (unsigned long) aa->array->Ptr
+ elt * aa->array->StrideB;
aa->func( src );
}