gh-120726: Fix compiler warnings on is_core_module() (#120727)

Fix compiler warnings on is_core_module() and
check_interpreter_whence(): only define them when
assertions are built.

Python/import.c

@@ -1551,6 +1551,7 @@ get_core_module_dict(PyInterpreterState *interp,
     return NULL;
 }
 
+#ifndef NDEBUG
 static inline int
 is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *path)
 {
@@ -1568,7 +1569,6 @@ is_core_module(PyInterpreterState *interp, PyObject *name, PyObject *path)
 }
 
 
-#ifndef NDEBUG
 static _Py_ext_module_kind
 _get_extension_kind(PyModuleDef *def, bool check_size)
 {

Python/pystate.c

@@ -584,9 +584,9 @@ free_interpreter(PyInterpreterState *interp)
         PyMem_RawFree(interp);
     }
 }
-
+#ifndef NDEBUG
 static inline int check_interpreter_whence(long);
-
+#endif
 /* Get the interpreter state to a minimal consistent state.
    Further init happens in pylifecycle.c before it can be used.
    All fields not initialized here are expected to be zeroed out,
@@ -1130,7 +1130,7 @@ _PyInterpreterState_IsReady(PyInterpreterState *interp)
     return interp->_ready;
 }
 
-
+#ifndef NDEBUG
 static inline int
 check_interpreter_whence(long whence)
 {
@@ -1142,6 +1142,7 @@ check_interpreter_whence(long whence)
     }
     return 0;
 }
+#endif
 
 long
 _PyInterpreterState_GetWhence(PyInterpreterState *interp)