Update markdown_math.js for version 5.36

Author: jackycute

mode/markdown/markdown_math.js

@@ -576,7 +576,7 @@ CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
       return type + tokenTypes.linkEmail;
     }
 
-    if (modeCfg.xml && ch === '<' && stream.match(/^(!--|[a-z]+(?:\s+[a-z_:.\-]+(?:\s*=\s*[^ >]+)?)*\s*>)/i, false)) {
+    if (modeCfg.xml && ch === '<' && stream.match(/^(!--|[a-z]+(?:\s+[a-z_:.\-]+(?:\s*=\s*[^>]+)?)*\s*>)/i, false)) {
       var end = stream.string.indexOf(">", stream.pos);
       if (end != -1) {
         var atts = stream.string.substring(stream.start, end);
@@ -894,8 +894,8 @@ CodeMirror.defineMode("markdown", function(cmCfg, modeCfg) {
     },
 
     indent: function(state, textAfter, line) {
-      if (state.block == htmlBlock) return htmlMode.indent(state.htmlState, textAfter, line)
-      if (state.localState) return state.localMode.indent(state.localState, textAfter, line)
+      if (state.block == htmlBlock && htmlMode.indent) return htmlMode.indent(state.htmlState, textAfter, line)
+      if (state.localState && state.localMode.indent) return state.localMode.indent(state.localState, textAfter, line)
       return CodeMirror.Pass
     },