lib/mpi: remove redundant variable esign

Variable esign is being assigned but is never used hence it is
redundant and can be removed.

Cleans up clang warning:
warning: variable 'esign' set but not used [-Wunused-but-set-variable]

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 2 deletions

diff --git a/lib/mpi/mpi-pow.c b/lib/mpi/mpi-pow.c
index 468fb7cd1221..a5c921e6d667 100644
--- a/lib/mpi/mpi-pow.c
+++ b/lib/mpi/mpi-pow.c
@@ -41,7 +41,7 @@ int mpi_powm(MPI res, MPI base, MPI exp, MPI mod)
         mpi_ptr_t tspace = NULL;
         mpi_ptr_t rp, ep, mp, bp;
         mpi_size_t esize, msize, bsize, rsize;
-        int esign, msign, bsign, rsign;
+        int msign, bsign, rsign;
         mpi_size_t size;
         int mod_shift_cnt;
         int negative_result;
@@ -53,7 +53,6 @@ int mpi_powm(MPI res, MPI base, MPI exp, MPI mod)
         esize = exp->nlimbs;
         msize = mod->nlimbs;
         size = 2 * msize;
-        esign = exp->sign;
         msign = mod->sign;
 
         rp = res->d;