修复短信带su的时候，部分命令不执行的bug

mpmaster/src/main/java/com/xypower/mpmaster/sms/SimUtil.java

@@ -575,10 +575,13 @@ public class SimUtil {
                         String[] strings = StringUtils.splitString2(substring);
                         if (strings != null && strings.length > 0) {
                             for (int i = 0; i < strings.length; i++) {
-                                if (i == 0 && "su".equals(strings[0])) {
+                                if (i == 0 ) {
-                                    ifsu = true;
+                                    if ("su".equals(strings[0])) {
+                                        ifsu = true;
+                                    } else {
+                                        ifsu = false;
+                                    }
                                 } else {
-                                    ifsu = false;
                                     shellList.add(strings[i]);
                                 }
                             }