Thread: fix missing parameter name

Author: spevans

CoreFoundation/Base.subproj/ForSwiftFoundationOnly.h

@@ -317,7 +317,7 @@ typedef pthread_t _CFThreadRef;
 CF_EXPORT _CFThreadRef _CFThreadCreate(const _CFThreadAttributes attrs, void *_Nullable (* _Nonnull startfn)(void *_Nullable), void *restrict _Nullable context);
 
 CF_SWIFT_EXPORT int _CFThreadSetName(pthread_t thread, const char *_Nonnull name);
-CF_SWIFT_EXPORT int _CFThreadGetName(char *_Nonnull, int length);
+CF_SWIFT_EXPORT int _CFThreadGetName(char *_Nonnull buf, int length);
 
 CF_EXPORT Boolean _CFCharacterSetIsLongCharacterMember(CFCharacterSetRef theSet, UTF32Char theChar);
 CF_EXPORT CFCharacterSetRef _CFCharacterSetCreateCopy(CFAllocatorRef alloc, CFCharacterSetRef theSet);