修复bug

yzg-util-base/src/main/java/com/yanzuoguang/util/helper/ArrayHelper.java

@@ -20,15 +20,16 @@ public class ArrayHelper {
      */
     public static <T extends Object> List<T> megerNotEmpty(T from, Collection<T>... froms) {
         List<T> tos = new ArrayList<>();
-        if (!StringHelper.isEmpty(from)) {
+        if (from != null && !StringHelper.isEmpty(from)) {
             tos.add(from);
         }
-        if (froms != null) {
-            for (Collection<T> list : froms) {
-                for (T item : list) {
-                    if (!StringHelper.isEmpty(item)) {
-                        tos.add(item);
-                    }
+        if (froms == null) {
+            return tos;
+        }
+        for (Collection<T> list : froms) {
+            for (T item : list) {
+                if (!StringHelper.isEmpty(item)) {
+                    tos.add(item);
                 }
             }
         }