Fix or improve some comments (and whitespace)
diff --git a/library/ecdh.c b/library/ecdh.c
index a118de5..8336912 100644
--- a/library/ecdh.c
+++ b/library/ecdh.c
@@ -200,7 +200,7 @@
 #endif
 
     if( ( ret = ecdh_gen_public_restartable( &ctx->grp, &ctx->d, &ctx->Q,
-                    f_rng, p_rng, rs_ctx ) ) != 0 )
+                                             f_rng, p_rng, rs_ctx ) ) != 0 )
         return( ret );
 
     if( ( ret = mbedtls_ecp_tls_write_group( &ctx->grp, &grp_len, buf, blen ) )
@@ -211,7 +211,7 @@
     blen -= grp_len;
 
     if( ( ret = mbedtls_ecp_tls_write_point( &ctx->grp, &ctx->Q, ctx->point_format,
-                                     &pt_len, buf, blen ) ) != 0 )
+                                             &pt_len, buf, blen ) ) != 0 )
         return( ret );
 
     *olen = grp_len + pt_len;