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Two tiny cleanup patches from James H.

[originally from svn r6111]

--- a/misc.c

+++ b/misc.c

@@ -194,7 +194,7 @@

     }

 }

-void memswap(void *av, void *bv, int size)

+static void memswap(void *av, void *bv, int size)

 {

     char tmpbuf[512];

     char *a = av, *b = bv;

--- a/untangle.c

+++ b/untangle.c

@@ -284,7 +284,7 @@

     d = n;

     a = 0;

-    b = 1 << 30;		       /* largest available power of 4 */

+    b = 1L << 30;		       /* largest available power of 4 */

     do {

         a >>= 1;

         di = 2*a + b;