more "declared and not used".

the last round omitted := range and only
checked 1 out of N vars in a multi-var :=

R=r
OCL=34624
CL=34638
diff --git a/src/pkg/fmt/print.go b/src/pkg/fmt/print.go
index 2c1b3ce..3c694f2 100644
--- a/src/pkg/fmt/print.go
+++ b/src/pkg/fmt/print.go
@@ -680,7 +680,7 @@
 
 		// int
 		case 'b':
-			if v, signed, ok := getInt(field); ok {
+			if v, _, ok := getInt(field); ok {
 				s = p.fmt.Fmt_b64(uint64(v)).Str()	// always unsigned
 			} else if v, ok := getFloat32(field); ok {
 				s = p.fmt.Fmt_fb32(v).Str()
@@ -690,7 +690,7 @@
 				goto badtype
 			}
 		case 'c':
-			if v, signed, ok := getInt(field); ok {
+			if v, _, ok := getInt(field); ok {
 				s = p.fmt.Fmt_c(int(v)).Str()
 			} else {
 				goto badtype