eliminate null analysis warnings
diff --git a/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/fsresource/SlingInitialContentMounter.java b/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/fsresource/SlingInitialContentMounter.java
index 2899966..c613cfc 100644
--- a/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/fsresource/SlingInitialContentMounter.java
+++ b/sling-maven-plugin/src/main/java/org/apache/sling/maven/bundlesupport/fsresource/SlingInitialContentMounter.java
@@ -115,7 +115,7 @@
                 if ( targetPath != null && !targetPath.endsWith("/") ) {
                     targetPath = targetPath + "/";
                 }
-                if ( targetPath != null && path.startsWith(targetPath) ) {
+                if ( targetPath != null && path != null && path.startsWith(targetPath) ) {
                     child = child.substring(targetPath.length());
                 }
                 dir = new File(rsrc.getDirectory(), child);