[MPMD-342] No debug log message issued when empty report shall be skipped and no issues have been found

This closes #69

Author: michael-o

src/main/java/org/apache/maven/plugins/pmd/CpdReport.java

@@ -185,7 +185,7 @@ public boolean canGenerateReport()
                 if ( skipEmptyReport )
                 {
                     result = cpdResult.hasDuplications();
-                    if ( result )
+                    if ( !result )
                     {
                         getLog().debug( "Skipping report since skipEmptyReport is true and there are no CPD issues." );
                     }
@@ -232,11 +232,11 @@ private void executeCpd()
             request.setLanguageProperties( languageProperties );
             request.setSourceEncoding( determineEncoding( !filesToProcess.isEmpty() ) );
             request.addFiles( filesToProcess.keySet() );
-            
+
             request.setShowPmdLog( showPmdLog );
             request.setColorizedLog( MessageUtils.isColorEnabled() );
             request.setLogLevel( determineCurrentRootLogLevel() );
-            
+
             request.setExcludeFromFailureFile( excludeFromFailureFile );
             request.setTargetDirectory( targetDirectory.getAbsolutePath() );
             request.setOutputEncoding( getOutputEncoding() );

src/main/java/org/apache/maven/plugins/pmd/PmdReport.java

@@ -337,7 +337,7 @@ public boolean canGenerateReport()
                 if ( skipEmptyReport )
                 {
                     result = pmdResult.hasViolations();
-                    if ( result )
+                    if ( !result )
                     {
                         getLog().debug( "Skipping report since skipEmptyReport is true and "
                                             + "there are no PMD violations." );