[sysprof] memprof: fix joining of LD_PRELOAD

[Christian Hergert <chergert src gnome org>]

commit f3d6bd3ed336d539300558d05a27a7653bad4e55
Author: Christian Hergert <chergert redhat com>
Date:   Fri Mar 13 15:19:18 2020 -0700

    memprof: fix joining of LD_PRELOAD

 src/libsysprof/sysprof-memprof-source.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/libsysprof/sysprof-memprof-source.c b/src/libsysprof/sysprof-memprof-source.c
index 790ba5e..aba55e5 100644
--- a/src/libsysprof/sysprof-memprof-source.c
+++ b/src/libsysprof/sysprof-memprof-source.c
@@ -49,7 +49,7 @@ sysprof_memprof_source_modify_spawn (SysprofSource    *source,
     else
       sysprof_spawnable_setenv (spawnable,
                                 "LD_PRELOAD",
-                                (freeme = g_strdup_printf ("%s:%s", so_path, ld_preload)));
+                                (freeme = g_strdup_printf ("%s,%s", so_path, ld_preload)));
   }
 #endif
 }