generate_descriptor_pkg.sh: fix bug in validation to use the right file

Change-Id: I5849c0d40960b43d266b1c6077a36bc563026144
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/descriptor-packages/tools/generate_descriptor_pkg.sh b/descriptor-packages/tools/generate_descriptor_pkg.sh
index 704f77f..e14d412 100755
--- a/descriptor-packages/tools/generate_descriptor_pkg.sh
+++ b/descriptor-packages/tools/generate_descriptor_pkg.sh
@@ -792,7 +792,7 @@
     cd $BASE_DIR
     # Mrityunjay Yadav: Validate descriptor
     GEN_BASEDIR=$(dirname "$0")
-    python $GEN_BASEDIR/validate_descriptor.py $DEST_DIR/$PKG/$descriptor
+    python $GEN_BASEDIR/validate_descriptor.py $BASE_DIR/$PKG/$descriptor
     if [ $? -ne 0 ]; then
         rc=$?
         echo "ERROR: validating descriptor for $PKG ($rc)" >&2