Busybox 1.21.0 squashed commit for jellybean

Change-Id: I423c7fc1254050c6495126b1b18dd33af07fed6b
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>
diff --git a/shell/math.c b/shell/math.c
index 760645d..15c0039 100644
--- a/shell/math.c
+++ b/shell/math.c
@@ -410,7 +410,7 @@
 				return "exponent less than 0";
 			c = 1;
 			while (--right_side_val >= 0)
-			    c *= rez;
+				c *= rez;
 			rez = c;
 		}
 		else if (right_side_val == 0)