Fix STEMlab start error output formatting

This simply adds a colon between the user message and the cURL error.

diff --git a/stemlab_discovery.c b/stemlab_discovery.c
index 4581bd13680eb0d35881f60d7b1687838b70fa2b..19278846f202bfdd88489919a4bd3a97be280aeb 100644 (file)
--- a/stemlab_discovery.c
+++ b/stemlab_discovery.c
@@ -301,7 +301,7 @@ void stemlab_start_app(const char * const app_id) {
   CURLcode curl_error = CURLE_OK;
 #define check_curl(description) do { \
   if (curl_error != CURLE_OK) { \
-    fprintf(stderr, "stemlab_start: " description "%s\n", \
+    fprintf(stderr, "stemlab_start: " description ": %s\n", \
         curl_easy_strerror(curl_error)); \
     exit(-1); \
   } \