commit de903b84c49f80a973f48ea47e46e5e47a186b7e
Author: Fletcher Woodruff <fletcherw@chromium.org>
Date:   Mon Oct 12 16:22:40 2020 -0600

    dll: fix memory leak in load
    
    In the case where we are unable to get a path for loading libs, and
    instead just use LIBDIR, we set 'src = strdup(LIBDIR)'. However, we
    never update orig_src to point to src before tokenizing the path with
    strsep(), so the memory is never freed.
    
    Update load to always set orig_src to src so that we don't leak memory.

diff --git a/backend/dll.c b/backend/dll.c
index d78d409e8..61ba2f846 100644
--- a/backend/dll.c
+++ b/backend/dll.c
@@ -477,9 +477,6 @@ load (struct backend *be)
 	  DBG (1, "load: malloc failed: %s\n", strerror (errno));
 	  return SANE_STATUS_NO_MEM;
 	}
-      if (orig_src)
-        free (orig_src);
-      orig_src = src;
       snprintf (src, src_len, "%s%s%s", path, DIR_SEP, LIBDIR);
     }
   else
@@ -494,6 +491,7 @@ load (struct backend *be)
     }
   DBG (3, "load: searching backend `%s' in `%s'\n", be->name, src);
 
+  orig_src = src;
   dir = strsep (&src, DIR_SEP);
 
   while (dir)