[libunwind] [libunwind][nfc] avoid prototype warning (PR #67250)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-libunwind

<details>
<summary>Changes</summary>

Avoid following prototype related warning.

Unwind-sjlj.c:85:75: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]

---
Full diff: https://github.com/llvm/llvm-project/pull/67250.diff


1 Files Affected:

- (modified) libunwind/src/Unwind-sjlj.c (+2-1) 


``````````diff
diff --git a/libunwind/src/Unwind-sjlj.c b/libunwind/src/Unwind-sjlj.c
index 90a55fd29db1faa..4d9a02699cddd78 100644
--- a/libunwind/src/Unwind-sjlj.c
+++ b/libunwind/src/Unwind-sjlj.c
@@ -82,7 +82,8 @@ struct _Unwind_FunctionContext {
 static _LIBUNWIND_THREAD_LOCAL struct _Unwind_FunctionContext *stack = NULL;
 #endif
 
-static struct _Unwind_FunctionContext *__Unwind_SjLj_GetTopOfFunctionStack() {
+static struct _Unwind_FunctionContext *
+__Unwind_SjLj_GetTopOfFunctionStack(void) {
 #if defined(__APPLE__)
   return _pthread_getspecific_direct(__PTK_LIBC_DYLD_Unwind_SjLj_Key);
 #else

``````````

</details>


https://github.com/llvm/llvm-project/pull/67250