Update misc_ops.py

Author: BobTheBuidler

mypyc/primitives/misc_ops.py

@@ -11,6 +11,7 @@
     c_pyssize_t_rprimitive,
     cstring_rprimitive,
     dict_rprimitive,
+    exact_dict_rprimitive,
     int_rprimitive,
     object_pointer_rprimitive,
     object_rprimitive,
@@ -155,7 +156,7 @@
 # Get the sys.modules dictionary
 get_module_dict_op = custom_op(
     arg_types=[],
-    return_type=dict_rprimitive,
+    return_type=exact_dict_rprimitive,
     c_function_name="PyImport_GetModuleDict",
     error_kind=ERR_NEVER,
     is_borrowed=True,