Fix code style

Co-authored-by: Dave Rodgman <dave.rodgman@arm.com>
Signed-off-by: Janos Follath <janos.follath@arm.com>
diff --git a/library/bignum_core.c b/library/bignum_core.c
index 54b5195..1a3e0b9 100644
--- a/library/bignum_core.c
+++ b/library/bignum_core.c
@@ -859,7 +859,7 @@
 mbedtls_ct_condition_t mbedtls_mpi_core_check_zero_ct(const mbedtls_mpi_uint *A,
                                                       size_t limbs)
 {
-    volatile const mbedtls_mpi_uint* force_read_A = A;
+    volatile const mbedtls_mpi_uint *force_read_A = A;
     mbedtls_mpi_uint bits = 0;
 
     for (size_t i = 0; i < limbs; i++) {