Fix missing clears on secret values

src/modules/generator/main_impl.h

@@ -218,6 +218,7 @@ static int secp256k1_generator_generate_internal(const secp256k1_context* ctx, s
         secp256k1_scalar_set_b32(&blind, blind32, &overflow);
         ret = !overflow;
         secp256k1_ecmult_gen_gej(&ctx->ecmult_gen_ctx, &accum, &blind);
+        secp256k1_scalar_clear(&blind);
     }
 
     secp256k1_sha256_initialize(&sha256);
@@ -356,6 +357,8 @@ int secp256k1_pedersen_blind_sum(const secp256k1_context* ctx, unsigned char *bl
     for (i = 0; i < n; i++) {
         secp256k1_scalar_set_b32(&x, blinds[i], &overflow);
         if (overflow) {
+            secp256k1_scalar_clear(&acc);
+            secp256k1_scalar_clear(&x);
             return 0;
         }
         if (i >= npositive) {