coverity#1326429 Dereference null return value

Change-Id: Ib047f6cb255610422afb423006b58e0da7eacead

scripting/java/com/sun/star/script/framework/io/UCBStreamHandler.java

@@ -207,13 +207,12 @@ public class UCBStreamHandler extends URLStreamHandler {
             InputStream is) throws
         IOException {
 
-        ZipEntry entry;
         ZipInputStream zis = new ZipInputStream(is);
 
         while (zis.available() != 0) {
-            entry = zis.getNextEntry();
+            ZipEntry entry = zis.getNextEntry();
 
-            if (entry.getName().equals(file)) {
+            if (entry != null && entry.getName().equals(file)) {
                 return zis;
             }
         }
@@ -275,4 +274,4 @@ public class UCBStreamHandler extends URLStreamHandler {
 
         return result;
     }
-}
\ No newline at end of file
+}