Code review request for 6897550 BigInteger constructor should use local cached String length

[Joseph D. Darcy]

Hello.

Please review this simple change to replace several calls to 
val.length() with an already cached copy of val.length(); patch below.

6897550 BigInteger constructor should use local cached String length
http://cr.openjdk.java.net/~darcy/6897550.0/

-Joe

--- old/src/share/classes/java/math/BigInteger.java    2009-11-03 
13:57:31.000000000 -0800
+++ new/src/share/classes/java/math/BigInteger.java    2009-11-03 
13:57:31.000000000 -0800
@@ -292,7 +292,7 @@
 
         if (radix < Character.MIN_RADIX || radix > Character.MAX_RADIX)
             throw new NumberFormatException("Radix out of range");
-        if (val.length() == 0)
+        if (len == 0)
             throw new NumberFormatException("Zero length BigInteger");
 
         // Check for at most one leading sign
@@ -303,7 +303,7 @@
             // No leading sign character or at most one leading sign 
character
             if (index1 == 0 || index2 == 0) {
                 cursor = 1;
-                if (val.length() == 1)
+                if (len == 1)
                     throw new NumberFormatException("Zero length 
BigInteger");
             }
             if (index1 == 0)
@@ -342,7 +342,7 @@
         // Process remaining digit groups
         int superRadix = intRadix[radix];
         int groupVal = 0;
-        while (cursor < val.length()) {
+        while (cursor < len) {
             group = val.substring(cursor, cursor += digitsPerInt[radix]);
             groupVal = Integer.parseInt(group, radix);
             if (groupVal < 0)