Change code to find Jacoco problem with coverage

Author: simasch

src/main/java/org/utplsql/maven/plugin/util/StringUtil.java

@@ -6,7 +6,13 @@ private StringUtil() {
     }
 
     public static boolean isEmpty(CharSequence cs) {
-        return cs == null || cs.length() == 0;
+        if (cs == null) {
+            return true;
+        }
+        if (cs.length() == 0) {
+            return true;
+        }
+        return false;
     }
 
     public static boolean isNotEmpty(CharSequence cs) {
@@ -15,10 +21,12 @@ public static boolean isNotEmpty(CharSequence cs) {
 
     public static boolean isBlank(CharSequence cs) {
         int strLen;
-        if (cs != null && (strLen = cs.length()) != 0) {
-            for (int i = 0; i < strLen; ++i) {
-                if (!Character.isWhitespace(cs.charAt(i))) {
-                    return false;
+        if (cs != null) {
+            if ((strLen = cs.length()) != 0) {
+                for (int i = 0; i < strLen; ++i) {
+                    if (!Character.isWhitespace(cs.charAt(i))) {
+                        return false;
+                    }
                 }
             }
         }