lib/gshadow.c: fgetsgent(): Don't use static variables

Reported-by: Chris Hofstaedtler <[email protected]>
Signed-off-by: Alejandro Colomar <[email protected]>

lib/gshadow.c

@@ -140,19 +140,23 @@ void endsgent (void)
 /*@observer@*//*@null@*/struct sgrp *
 fgetsgent(/*@null@*/FILE *fp)
 {
-	static size_t buflen = 0;
-	static char *buf = NULL;
+	char         *buf = NULL;
+	size_t       buflen = 0;
+	struct sgrp  *sg;
 
-	if (NULL == fp) {
+	if (NULL == fp)
 		return NULL;
-	}
 
 	if (getline(&buf, &buflen, fp) == -1)
 		return NULL;
 	if (stpsep(buf, "\n") == NULL)
 		return NULL;
 
-	return (sgetsgent (buf));
+	sg = sgetsgent(buf);
+
+	free(buf);
+
+	return sg;
 }