[MNG-7661] Fix verifier 'clean' call in one of the ITs (#227)

diff --git a/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng7112ProjectsWithNonRecursiveTest.java b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng7112ProjectsWithNonRecursiveTest.java
index 8d3b742..68cadf9 100644
--- a/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng7112ProjectsWithNonRecursiveTest.java
+++ b/core-it-suite/src/test/java/org/apache/maven/it/MavenITmng7112ProjectsWithNonRecursiveTest.java
@@ -43,8 +43,9 @@
             throws IOException, VerificationException
     {
         final File projectDir = ResourceExtractor.simpleExtractResources( getClass(), PROJECT_PATH );
-        newVerifier( projectDir.getAbsolutePath() ).addCliArgument( "clean" );
-        newVerifier( projectDir.getAbsolutePath() ).execute();
+        Verifier cleaner = newVerifier( projectDir.getAbsolutePath() );
+        cleaner.addCliArgument( "clean" );
+        cleaner.execute();
 
         final Verifier verifier = newVerifier( projectDir.getAbsolutePath() );
 
@@ -67,8 +68,9 @@
             throws IOException, VerificationException
     {
         final File projectDir = ResourceExtractor.simpleExtractResources( getClass(), PROJECT_PATH );
-        newVerifier( projectDir.getAbsolutePath() ).addCliArgument( "clean" );
-        newVerifier( projectDir.getAbsolutePath() ).execute();
+        Verifier cleaner = newVerifier( projectDir.getAbsolutePath() );
+        cleaner.addCliArgument( "clean" );
+        cleaner.execute();
 
         final Verifier verifier = newVerifier( projectDir.getAbsolutePath() );