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devtls: remove static "already" flag in tlsinit(). this function is only run once.

--- a/sys/src/9/port/devtls.c

+++ b/sys/src/9/port/devtls.c

@@ -1793,12 +1793,8 @@

 	struct Hashalg *h;

 	int n;

 	char *cp;

-	static int already;

-	if(!already){

-		fmtinstall('H', encodefmt);

-		already = 1;

-	}

+	fmtinstall('H', encodefmt);

 	tlsdevs = smalloc(sizeof(TlsRec*) * maxtlsdevs);

 	trnames = smalloc((sizeof *trnames) * maxtlsdevs);