https://bugs.gentoo.org/945262

--- a/wavsplit.h
+++ b/wavsplit.h
@@ -113,7 +113,7 @@ static __inline__ short _LE_short (unsigned char *lp)
 
 #endif
 
-static char *findchunk ();
+static char *findchunk (char *pstart, char *fourcc, size_t n);
 static int readheader ();
 static void Report (const char *Message, const char *Severity, int Verbose);
 static int TokenOK (const char *Message, char **strPtr);