esp32: get_chip_info_esp32() return correct model number

out_info->model was zeroed by memset

Merges https://github.com/espressif/esp-idf/pull/1760

components/esp32/system_api.c

@@ -379,9 +379,10 @@ const char* esp_get_idf_version(void)
 
 static void get_chip_info_esp32(esp_chip_info_t* out_info)
 {
-    out_info->model = CHIP_ESP32;
     uint32_t reg = REG_READ(EFUSE_BLK0_RDATA3_REG);
     memset(out_info, 0, sizeof(*out_info));
+    
+    out_info->model = CHIP_ESP32;
     if ((reg & EFUSE_RD_CHIP_VER_REV1_M) != 0) {
         out_info->revision = 1;
     }