refactor: fix a C warning

nedbat · nedbat · commit 523059b8d428 · 2025-04-13T09:54:51.000-04:00
```
In file included from /usr/include/python3.13/Python.h:72,
                 from coverage/ctracer/util.h:7,
                 from coverage/ctracer/tracer.c:6:
/usr/include/python3.13/object.h:952:23: warning: ‘Py_DECREF’ is static but used in inline function ‘MyFrame_BorrowCode’ which is not static
  952 | #define Py_DECREF(op) Py_DECREF(_PyObject_CAST(op))
      |                       ^~~~~~~~~
coverage/ctracer/tracer.c:298:5: note: in expansion of macro ‘Py_DECREF’
  298 |     Py_DECREF(pCode);
      |     ^~~~~~~~~
```
diff --git a/coverage/ctracer/tracer.c b/coverage/ctracer/tracer.c
@@ -289,7 +289,7 @@ CTracer_set_pdata_stack(CTracer *self)
 }
 
 // Thanks for the idea, memray!
-inline PyCodeObject*
+static inline PyCodeObject*
 MyFrame_BorrowCode(PyFrameObject* frame)
 {
     // Return a borrowed reference.

Original file line number	Diff line number	Diff line change
`@@ -289,7 +289,7 @@ CTracer_set_pdata_stack(CTracer *self)`
`289`	`289`	`}`
`290`	`290`
`291`	`291`	`// Thanks for the idea, memray!`
`292`		`-inline PyCodeObject*`
	`292`	`+static inline PyCodeObject*`
`293`	`293`	`MyFrame_BorrowCode(PyFrameObject* frame)`
`294`	`294`	`{`
`295`	`295`	`// Return a borrowed reference.`