delete dead code (type.is_ptr never coincides with type.is_int)

Cython/Compiler/TypeInference.py

@@ -483,9 +483,9 @@ def safe_spanning_type(types, might_overflow, pos):
         # find_spanning_type() only returns 'bint' for clean boolean
         # operations without other int types, so this is safe, too
         return result_type
-    elif result_type.is_ptr and not (result_type.is_int and result_type.rank == 0):
+    elif result_type.is_ptr:
         # Any pointer except (signed|unsigned|) char* can't implicitly
-        # become a PyObject.
+        # become a PyObject, and inferring char* is now accepted, too.
         return result_type
     elif result_type.is_cpp_class:
         # These can't implicitly become Python objects either.