FIX: len for modules check

pmodules_tools/db_diff/check.py

@@ -28,10 +28,10 @@ def asciidoc_json_dump(list, name, steps, Pmodules_db_path):
         matrix_db = temp_matrix_db
 
     # Update the database for new changes
-    if len(list) > 1:
+    if len(list) != 0:
         list_range = len(list) - steps + 1
         for index in range(0, list_range, steps):
-            if len(list[index]) > 1:
+            if len(list[index]) != 0:
                 matrix_row = [list[index].split()[0]]
                 if steps == 2:
                     matrix_row += [