Remove a few unneccesary property accesses

Author: marijnh

lib/codemirror.js

@@ -3815,7 +3815,7 @@
     if (how == "smart") {
       // Fall back to "prev" when the mode doesn't have an indentation
       // method.
-      if (!cm.doc.mode.indent) how = "prev";
+      if (!doc.mode.indent) how = "prev";
       else state = getStateBefore(cm, n);
     }
 
@@ -3827,7 +3827,7 @@
       indentation = 0;
       how = "not";
     } else if (how == "smart") {
-      indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
+      indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
       if (indentation == Pass || indentation > 150) {
         if (!aggressive) return;
         how = "prev";
@@ -3851,7 +3851,7 @@
     if (pos < indentation) indentString += spaceStr(indentation - pos);
 
     if (indentString != curSpaceString) {
-      replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
+      replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
     } else {
       // Ensure that, if the cursor was in the whitespace at the start
       // of the line, it is moved to the end of that space.