[FIX] server: fix module dependency warning in non-module addon

If the code try to import something from a module but that code is not in a module itself, the diagnostic tool was crashing. It does not occur in odoo core, but saas-worker for example is importing base

Author: fda-odoo

server/features/validation/python_validator.py

@@ -88,7 +88,7 @@ def _resolve_import(self, from_stmt, name_aliases, level, node):
 
         for node_alias, symbol, file_tree in symbols:
             name = node_alias.name
-            if symbol:
+            if symbol and self.currentModule: # We test dependencies only if we are already in a module (saas-worker example)
                 module = symbol.get_module_sym()
                 if module and not self.currentModule.is_in_deps(module.dir_name) and not self.safeImport[-1]:
                     self.diagnostics.append(Diagnostic(