For un-prototyped static inline functions declared in pthread_md.h on

sparc64, use ANSI function headers and specifically indicate the lack of
arguments with 'void'.  Otherwise, warnings are generated at WARNS=3 for
libkse, leading to a compile failure with -Werror.

libexec/rtld-elf/sparc64/rtld_machdep.h

@@ -37,7 +37,7 @@
 struct Struct_Obj_Entry;
 
 /* Return the address of the .dynamic section in the dynamic linker. */
-Elf_Dyn *rtld_dynamic_addr();
+Elf_Dyn *rtld_dynamic_addr(void);
 #define	rtld_dynamic(obj)	rtld_dynamic_addr()
 #define	RTLD_IS_DYNAMIC()	(rtld_dynamic_addr() != NULL)