commit 568a09c220a706cb717f345a4da14e935dca1672
from: Omar Polo <op@omarpolo.com>
date: Mon Jan 18 15:25:49 2021 UTC

fix requri construction

when we switched from one process to two, I introduced a small
optimisation: empty string are not send, so we receive NULL.
Constructing requri we need to make sure that relpath is not null.

commit - f87bf597ea711ef795b27d70fd5b992a80e021c8
commit + 568a09c220a706cb717f345a4da14e935dca1672
blob - 7ae4e9395827f73f056049f42a307889793ddc63
blob + c1e1ad9a59402eb433fdbc4e71c237a3c55914b7
--- ex.c
+++ ex.c
@@ -208,7 +208,8 @@ launch_cgi(const char *spath, const char *relpath, con
 			goto childerr;
 
 		if (asprintf(&requri, "%s%s%s", spath,
-		    (relpath != NULL && *relpath == '\0') ? "" : "/", relpath) == -1)
+		    (relpath != NULL && *relpath == '\0') ? "" : "/",
+		    (relpath != NULL ? relpath : "")) == -1)
 			goto childerr;
 
 		argv[0] = argv[1] = ex;