guard against NPE

git-svn-id: https://svn.apache.org/repos/asf/maven/archiva/trunk@630842 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/archiva-base/archiva-repository-layer/src/main/java/org/apache/maven/archiva/repository/content/ArtifactExtensionMapping.java b/archiva-base/archiva-repository-layer/src/main/java/org/apache/maven/archiva/repository/content/ArtifactExtensionMapping.java
index 699f913527d886d7d505ef05b9017224f41e3670..3c28cec2c110040370f87f4eb946d8f57822fc09 100644 (file)
--- a/archiva-base/archiva-repository-layer/src/main/java/org/apache/maven/archiva/repository/content/ArtifactExtensionMapping.java
+++ b/archiva-base/archiva-repository-layer/src/main/java/org/apache/maven/archiva/repository/content/ArtifactExtensionMapping.java
@@ -93,15 +93,15 @@ public class ArtifactExtensionMapping
 
     public static String mapExtensionToType( String extension )
     {
-        if ( extension.equals( "tar.gz" ) )
+        if ( "tar.gz".equals( extension ) )
         {
             return "distribution-tgz";
         }
-        else  if ( extension.equals( "tar.bz2" ) )
+        else  if ( "tar.bz2".equals( extension ) )
         {
             return "distribution-bzip";
         }
-        else  if ( extension.equals( "zip" ) )
+        else  if ( "zip".equals( extension ) )
         {
             return "distribution-zip";
         }