components/log: fix error when using ESP_LOGx from C++ code

components/log/include/esp_log.h

@@ -154,8 +154,8 @@ uint32_t esp_log_timestamp();
 #define LOG_COLOR_BLUE    "34"
 #define LOG_COLOR_PURPLE  "35"
 #define LOG_COLOR_CYAN    "36"
-#define LOG_COLOR(COLOR)  "\033[0;"COLOR"m"
-#define LOG_BOLD(COLOR)   "\033[1;"COLOR"m"
+#define LOG_COLOR(COLOR)  "\033[0;" COLOR "m"
+#define LOG_BOLD(COLOR)   "\033[1;" COLOR "m"
 #define LOG_RESET_COLOR   "\033[0m"
 #define LOG_COLOR_E       LOG_COLOR(LOG_COLOR_RED)
 #define LOG_COLOR_W       LOG_COLOR(LOG_COLOR_BROWN)