From c3ec63df42e84ff37c4b4e34cbfb264e69318b66 Mon Sep 17 00:00:00 2001
From: Paul Bakker <p.j.bakker@polarssl.org>
Date: Tue, 29 Oct 2013 16:18:35 +0100
Subject: [PATCH] Minor change that makes life easier for static analyzers /
 compilers

---
 library/bignum.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/library/bignum.c b/library/bignum.c
index 1422d5026..504f51bd4 100644
--- a/library/bignum.c
+++ b/library/bignum.c
@@ -1480,7 +1480,7 @@ int mpi_exp_mod( mpi *X, const mpi *A, const mpi *E, const mpi *N, mpi *_RR )
 
         for( i = 0; i < wsize - 1; i++ )
             mpi_montmul( &W[j], &W[j], N, mm, &T );
-    
+
         /*
          * W[i] = W[i - 1] * W[1]
          */
@@ -1503,9 +1503,11 @@ int mpi_exp_mod( mpi *X, const mpi *A, const mpi *E, const mpi *N, mpi *_RR )
     {
         if( bufsize == 0 )
         {
-            if( nblimbs-- == 0 )
+            if( nblimbs == 0 )
                 break;
 
+            nblimbs--;
+
             bufsize = sizeof( t_uint ) << 3;
         }