Move-to-first-character-of-line no longer explodes on empty lines

spec/app/editor-spec.coffee

@@ -427,6 +427,10 @@ describe "Editor", ->
         expect(cursor1.getBufferPosition()).toEqual [0,0]
         expect(cursor2.getBufferPosition()).toEqual [1,0]
 
+      it "does not throw an exception on an empty line", ->
+        editor.setCursorBufferPosition([10, 0])
+        editor.trigger 'move-to-first-character-of-line'
+
     describe "move-to-next-word", ->
       it "moves the cursor to the next word or the end of file if there is no next word", ->
         editor.setCursorBufferPosition [2, 5]

src/app/cursor.coffee

@@ -144,6 +144,7 @@ class Cursor extends View
     newPosition = null
     @editor.scanInRange /^\s*/, range, (match, matchRange) =>
       newPosition = matchRange.end
+    return unless newPosition
     newPosition = [position.row, 0] if newPosition.isEqual(position)
     @setBufferPosition(newPosition)