Revert "Also handle CMARK_NODE_HTML_BLOCK"

This reverts commit b44f479.

Author: kevinbackhouse

src/blocks.c

@@ -259,18 +259,15 @@ static void remove_trailing_blank_lines(cmark_strbuf *ln) {
 // Check to see if a node ends with a blank line, descending
 // if needed into lists and sublists.
 static bool S_ends_with_blank_line(cmark_node *node) {
-  while (true) {
-    if (S_last_line_checked(node)) {
-      return(S_last_line_blank(node));
-    } else if ((S_type(node) == CMARK_NODE_LIST ||
-                S_type(node) == CMARK_NODE_ITEM) && node->last_child) {
-      S_set_last_line_checked(node);
-      node = node->last_child;
-      continue;
-    } else {
-      S_set_last_line_checked(node);
-      return (S_last_line_blank(node));
-    }
+  if (S_last_line_checked(node)) {
+    return(S_last_line_blank(node));
+  } else if ((S_type(node) == CMARK_NODE_LIST ||
+              S_type(node) == CMARK_NODE_ITEM) && node->last_child) {
+    S_set_last_line_checked(node);
+    return(S_ends_with_blank_line(node->last_child));
+  } else {
+    S_set_last_line_checked(node);
+    return (S_last_line_blank(node));
   }
 }
 
@@ -1140,7 +1137,6 @@ static cmark_node *check_open_blocks(cmark_parser *parser, cmark_chunk *input,
               // fall through
             case CMARK_NODE_CODE_BLOCK:
             case CMARK_NODE_PARAGRAPH:
-            case CMARK_NODE_HTML_BLOCK:
               // Jump to parser->current
               container = parser->current;
               cont_type = S_type(container);