Fix new compiler warnings.  Unused var in compile.c.  Argsize mismatches
in binascii.c (only on platforms with signed chars -- although Py_CHARMASK
is documented as returning an int, it only does so on platforms with
signed chars).
diff --git a/Modules/binascii.c b/Modules/binascii.c
index 1fe0663..a9e190b 100644
--- a/Modules/binascii.c
+++ b/Modules/binascii.c
@@ -918,7 +918,7 @@
 
 
 static int
-to_int(char c) 
+to_int(int c) 
 {
 	if (isdigit(c))
 		return c - '0';
diff --git a/Python/compile.c b/Python/compile.c
index 30ac41a..7065647 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -305,7 +305,6 @@
 {
 	size_t n = strlen(msg);
 	PyObject *v, *tb, *tmp;
-	char *s;
 	c->c_errors++;
 	if (c->c_lineno <= 1) {
 		/* Unknown line number or single interactive command */