Fix a compiler warning.

This fixes the following scan-build warning:

  serialport.c: In function 'sp_list_ports':
  serialport.c:354:1: warning: control reaches end of non-void function [-Wreturn-type]

diff --git a/libserialport_internal.h b/libserialport_internal.h
index 27fae2a128569a309d912f2541b3183be176e309..6a8c877262720f179a543151fa1ff7b41ba00f5e 100644 (file)
--- a/libserialport_internal.h
+++ b/libserialport_internal.h
@@ -192,6 +192,7 @@ extern void (*sp_debug_handler)(const char *format, ...);
        case SP_ERR_FAIL: RETURN_CODE(SP_ERR_FAIL); \
        case SP_ERR_MEM: RETURN_CODE(SP_ERR_MEM); \
        case SP_ERR_SUPP: RETURN_CODE(SP_ERR_SUPP); \
+       default: RETURN_CODE(SP_ERR_FAIL); \
        } \
 } while (0)
 #define RETURN_OK() RETURN_CODE(SP_OK);