1.fix index out of bounds issue

luoo_tag/src/main/java/com/luoo/tag/service/TagService.java

@@ -164,10 +164,11 @@ public class TagService {
         tag.setDescription(updateReq.getDescription());
 //		tag.setUpdaterId(RequestContext.get().getId());
 
-        String srcKey = null;
+        
         if (null == updateReq.getImage()) {
             tag.setImage(null);
         } else {
+        	String srcKey = null;
             if (updateReq.getImage().contains(TagS3Service.TEMP_KEY_PREFIX)) {
                 srcKey = updateReq.getImage().substring(updateReq.getImage().indexOf(TagS3Service.TEMP_KEY_PREFIX));
             }
@@ -181,6 +182,7 @@ public class TagService {
         if (null == updateReq.getThumbnail()) {
             tag.setThumbnail(null);
         } else {
+        	String srcKey = null;
             if (updateReq.getThumbnail().contains(TagS3Service.TEMP_KEY_PREFIX)) {
                 srcKey = updateReq.getThumbnail().substring(updateReq.getThumbnail().indexOf(TagS3Service.TEMP_KEY_PREFIX));
             }