Fix harmless compiler warnings.

FossilOrigin-Name: 4a7b4ee011fea911b981206c242e3d5553303b52
diff --git a/src/resolve.c b/src/resolve.c
index aeeec88..f8cd9e5 100644
--- a/src/resolve.c
+++ b/src/resolve.c
@@ -263,8 +263,8 @@
         assert( pTab!=0 && pTab->zName!=0 );
         assert( pTab->nCol>0 );
         if( pItem->pSelect && (pItem->pSelect->selFlags & SF_NestedFrom)!=0 ){
-          ExprList *pEList = pItem->pSelect->pEList;
           int hit = 0;
+          pEList = pItem->pSelect->pEList;
           for(j=0; j<pEList->nExpr; j++){
             if( sqlite3MatchSpanName(pEList->a[j].zSpan, zCol, zTab, zDb) ){
               cnt++;