优化组件逻辑

uview-ui/components/u-image/u-image.vue

@@ -162,14 +162,18 @@ export default {
 		};
 	},
 	watch: {
-		src(n) {
+		src: {
+			immediate: true,
+			handler (n) {
 				if(!n) {
 					// 如果传入null或者''，或者false，或者undefined，标记为错误状态
 					this.isError = true;
+					this.loading = false;
 				} else {
 					this.isError = false;
 				}
 			}
+		}
 	},
 	computed: {
 		wrapStyle() {

uview-ui/components/u-read-more/u-read-more.vue

@@ -2,7 +2,7 @@
 	<view class="">
 		<view class="u-content" :class="[elId]" :style="{ 
 			height: isLongContent && !showMore ? showHeight + 'rpx' : 'auto',
-			textIndent: this.textIndent
+			textIndent: textIndent
 		}">
 			<slot></slot>
 		</view>