[MXCHIP] remove empty line for mbedtls log

src/supplemental/tls/mbedtls/tls.c

@@ -139,6 +139,7 @@ tls_dbg(void *ctx, int level, const char *file, int line, const char *s)
 {
 #ifdef CONFIG_MXCHIP_DEBUG_TLS
  char buf[256];
+ int log_len;
 #else
  char buf[128];
 #endif
@@ -148,6 +149,14 @@ tls_dbg(void *ctx, int level, const char *file, int line, const char *s)
  // log_debug("****[mbedtls log(%d)] %s", level, buf);
 
 #ifdef CONFIG_MXCHIP_DEBUG_TLS
+ /* remove the '\n' at the end of the mbedtls log string, because it will be added by log_log api. */
+ log_len = strlen(buf);
+ if(log_len < sizeof(buf)) {
+ buf[log_len - 1] = '\0';
+ }
+ else {
+ buf[sizeof(buf) - 1] = '\0'; // in case of overflow
+ }
  log_log(mbedtls_log_level_to_nanomq(level), "tls.c", __LINE__, __FUNCTION__, "%s", buf);
 #else
  nni_plat_println(buf);