nvml warning fix and disable scrypt gpu test

nvml.cpp

@@ -363,6 +363,7 @@ int nvml_reset_clocks(nvml_handle *nvmlh, int dev_id)
 		return -1;
 	}
 	gpu_clocks_changed[dev_id] = 0;
+	return 1;
 }
 
 int nvml_get_gpucount(nvml_handle *nvmlh, int *gpucount)

util.cpp

@@ -1770,9 +1770,9 @@ void do_gpu_tests(void)
 	//memcpy(buf, zrtest, 80);
 	//scanhash_zr5(0, (uint32_t*)buf, tgt, zrtest[19]+1, &done);
 
-	struct timeval tv;
-	memset(buf, 0, sizeof buf);
-	scanhash_scrypt_jane(0, (uint32_t*)buf, tgt, NULL, 1, &done, &tv, &tv);
+	//struct timeval tv;
+	//memset(buf, 0, sizeof buf);
+	//scanhash_scrypt_jane(0, (uint32_t*)buf, tgt, NULL, 1, &done, &tv, &tv);
 
 	memset(buf, 0, sizeof buf);
 	scanhash_x11(0, (uint32_t*)buf, tgt, 1, &done);