Fix build with llvm22

Index: src/htmltable.c
--- src/htmltable.c.orig
+++ src/htmltable.c
@@ -1206,7 +1206,7 @@ rowGroupIterate(pTree, pNode, p)
             sRow.node.iNode = -1;
             sRow.nChild = jj - ii;
             sRow.apChildren = &((HtmlElementNode *)pNode)->apChildren[ii];
-            rowIterate(pTree, &sRow, p);
+            rowIterate(pTree, (HtmlNode *)&sRow, p);
             assert(!sRow.pLayoutCache);
             ii = jj - 1;
         }
@@ -1331,7 +1331,7 @@ tableIterate(pTree, pNode, xCallback, xRowCallback, pC
             sRowGroup.node.iNode = -1;
             sRowGroup.nChild = jj - ii;
             sRowGroup.apChildren = &((HtmlElementNode *)pNode)->apChildren[ii];
-            rowGroupIterate(pTree, &sRowGroup, &sRowContext);
+            rowGroupIterate(pTree, (HtmlNode *)&sRowGroup, &sRowContext);
             assert(!sRowGroup.pLayoutCache);
             ii = jj - 1;
         }
