Fix pmd violations

pmd-java/src/main/java/net/sourceforge/pmd/lang/java/rule/errorprone/ConstructorCallsOverridableMethodRule.java

@@ -66,7 +66,7 @@ public final class ConstructorCallsOverridableMethodRule extends AbstractJavaRul
             JMethodSymbol unsafetyReason = getUnsafetyReason(call, TreePVector.empty());
             if (unsafetyReason != null) {
                 String message;
-                if (unsafetyReason == call.getOverloadSelectionInfo().getMethodType().getSymbol()) {
+                if (unsafetyReason.equals(call.getOverloadSelectionInfo().getMethodType().getSymbol())) {
                     message = MESSAGE;
                 } else {
                     message = MESSAGE_TRANSITIVE;

pmd-java/src/main/java/net/sourceforge/pmd/lang/java/types/TypePrettyPrint.java

@@ -51,8 +51,8 @@ public final class TypePrettyPrint {
         private boolean isVarargs = false;
 
         /** Create a new pretty printer with the default configuration. */
-        public TypePrettyPrinter() {
-
+        public TypePrettyPrinter() { // NOPMD
+            // default
         }
 
         StringBuilder append(char o) {