481970 : fix NPE in PackagingConfiguration.isPackaged

Change-Id: Ifff7312339878435c8e30c537507e2c65fcbbf0e
Signed-off-by: Fred Bricon <fbricon@gmail.com>
diff --git a/org.eclipse.m2e.wtp/src/org/eclipse/m2e/wtp/PackagingConfiguration.java b/org.eclipse.m2e.wtp/src/org/eclipse/m2e/wtp/PackagingConfiguration.java
index e657cc8..6cf2e29 100644
--- a/org.eclipse.m2e.wtp/src/org/eclipse/m2e/wtp/PackagingConfiguration.java
+++ b/org.eclipse.m2e.wtp/src/org/eclipse/m2e/wtp/PackagingConfiguration.java
@@ -46,7 +46,7 @@
       return false;
     }
     virtualPath = toPortablePath(virtualPath);
-    if (packagingIncludes != null) {
+    if (packagingExcludes != null) {
       for(String excl : packagingExcludes) {
         if(matches(excl, virtualPath)) {
           //stop here already, since exclusions have precedence over inclusions