Don't force a width on IE7

It produces a bogus horizontal scrollbar there.

Author: marijnh

lib/codemirror.js

@@ -1983,8 +1983,10 @@ window.CodeMirror = (function() {
       if (updateMaxLine) computeMaxLength();
       if (maxLineChanged && !options.lineWrapping) {
         var cursorWidth = widthForcer.offsetWidth, left = measureLine(maxLine, maxLine.text.length).left;
-        widthForcer.style.left = left + "px";
-        lineSpace.style.minWidth = (left + cursorWidth) + "px";
+        if (!ie_lt8) {
+          widthForcer.style.left = left + "px";
+          lineSpace.style.minWidth = (left + cursorWidth) + "px";
+        }
         maxLineChanged = false;
       }
       var newScrollPos, updated;

test/test.js

@@ -363,7 +363,7 @@ testCM("selectionPos", function(cm) {
     }
   }
   is(sawTop && sawBottom && sawMiddle, "all parts");
-});
+}, null, ie_lt8);
 
 testCM("restoreHistory", function(cm) {
   cm.setValue("abc\ndef");