dist: handle SyntaxError in imported module

direct/src/dist/FreezeTool.py

@@ -2410,6 +2410,9 @@ class PandaModuleFinder(modulefinder.ModuleFinder):
         except ImportError as msg:
             self.msg(2, "ImportError:", str(msg))
             self._add_badmodule(name, caller)
+        except SyntaxError as msg:
+            self.msg(2, "SyntaxError:", str(msg))
+            self._add_badmodule(name, caller)
         else:
             if fromlist:
                 for sub in fromlist: