lib: Remove trailing whitespaces

Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

grub-core/lib/libgcrypt/mpi/generic/mpih-mul1.c

@@ -48,13 +48,13 @@ _gcry_mpih_mul_1( mpi_ptr_t res_ptr, mpi_ptr_t s1_ptr, mpi_size_t s1_size,
   res_ptr -= j;
 
   cy_limb = 0;
-  do 
+  do
     {
       umul_ppmm( prod_high, prod_low, s1_ptr[j], s2_limb );
       prod_low += cy_limb;
       cy_limb = (prod_low < cy_limb?1:0) + prod_high;
       res_ptr[j] = prod_low;
-    } 
+    }
   while( ++j );
 
   return cy_limb;