[stex mode] Reposition some else lines to match coding style

mode/stex/stex.js

@@ -130,8 +130,7 @@
       if (ch == "%") {
         source.skipToEnd();
         return "comment";
-      }
-      else if (ch == '}' || ch == ']') {
+      } else if (ch == '}' || ch == ']') {
         plug = peekCommand(state);
         if (plug) {
           plug.closeBracket(ch);
@@ -145,12 +144,10 @@
         plug = new plug();
         pushCommand(state, plug);
         return "bracket";
-      }
-      else if (/\d/.test(ch)) {
+      } else if (/\d/.test(ch)) {
         source.eatWhile(/[\w.%]/);
         return "atom";
-      }
-      else {
+      } else {
         source.eatWhile(/[\w\-_]/);
         plug = getMostPowerful(state);
         if (plug.name == 'begin') {