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Remove non needed variable in parseargs()

This variable had the same meaning and use than the parameter, so it is
better to use the parameter.

--- a/cc1/cpp.c

+++ b/cc1/cpp.c

@@ -21,7 +21,7 @@

 {

 	unsigned n ;

 	size_t len;

-	char **bp, *endp, c;

+	char *endp, c;

 	if (*s != '(') {

 		*nargs = -1;

@@ -33,7 +33,7 @@

 	}

-	for (bp = args, n = 1; n <= NR_MACROARG; ++bp, ++n) {

+	for (n = 1; n <= NR_MACROARG; ++n) {

 		while (isspace(*s))

 			++s;

 		if (!isalnum(*s) && *s != '_')

@@ -42,7 +42,7 @@

 			/* nothing */;

 		if ((len = endp - s) > IDENTSIZ)

 			error("macro argument too long");

-		*bp = s;

+		*args++ = s;

 		for (s = endp; isspace(*s); ++s)

 			*s = '\0';

 		c = *s;