remove useless check

Author: xidui

lib/Codemirror.js

@@ -65,7 +65,7 @@ var CodeMirror = createReactClass({
 		}
 	},
 	componentWillReceiveProps: function componentWillReceiveProps(nextProps) {
-		if (this.codeMirror && nextProps.value !== undefined && nextProps.value !== this.props.value && normalizeLineEndings(this.codeMirror.getValue()) !== normalizeLineEndings(nextProps.value)) {
+		if (this.codeMirror && nextProps.value !== undefined && normalizeLineEndings(this.codeMirror.getValue()) !== normalizeLineEndings(nextProps.value)) {
 			if (this.props.preserveScrollPosition) {
 				var prevScrollPosition = this.codeMirror.getScrollInfo();
 				this.codeMirror.setValue(nextProps.value);
@@ -133,4 +133,4 @@ var CodeMirror = createReactClass({
 	}
 });
 
-module.exports = CodeMirror;
+module.exports = CodeMirror;

src/Codemirror.js

@@ -63,7 +63,7 @@ const CodeMirror = createReactClass({
 		}
 	},
 	componentWillReceiveProps: function (nextProps) {
-		if (this.codeMirror && nextProps.value !== undefined && nextProps.value !== this.props.value && normalizeLineEndings(this.codeMirror.getValue()) !== normalizeLineEndings(nextProps.value)) {
+		if (this.codeMirror && nextProps.value !== undefined && normalizeLineEndings(this.codeMirror.getValue()) !== normalizeLineEndings(nextProps.value)) {
 			if (this.props.preserveScrollPosition) {
 				var prevScrollPosition = this.codeMirror.getScrollInfo();
 				this.codeMirror.setValue(nextProps.value);