525609 : ensure javaproject exists before checking for module description

Change-Id: I5da22d53f7247f49a5b582bb218eebd9731c5f4f
Signed-off-by: Fred Bricon <fbricon@gmail.com>
diff --git a/org.eclipse.m2e.jdt/src/org/eclipse/m2e/jdt/internal/InternalModuleSupport.java b/org.eclipse.m2e.jdt/src/org/eclipse/m2e/jdt/internal/InternalModuleSupport.java
index 8a4e08d..5b74023 100644
--- a/org.eclipse.m2e.jdt/src/org/eclipse/m2e/jdt/internal/InternalModuleSupport.java
+++ b/org.eclipse.m2e.jdt/src/org/eclipse/m2e/jdt/internal/InternalModuleSupport.java
@@ -68,6 +68,9 @@
   public static void configureClasspath(IMavenProjectFacade facade, IClasspathDescriptor classpath,
       IProgressMonitor monitor) throws CoreException {
     IJavaProject javaProject = JavaCore.create(facade.getProject());
+    if(javaProject == null || !javaProject.exists()) {
+      return;
+    }
     IModuleDescription moduleDescription = javaProject.getModuleDescription();
     if(!(moduleDescription instanceof AbstractModule)) {
       return;