runtests: use the local curl for verifying

... revert the mistaken change brought in commit 8440616f53.

Reported-by: Alessandro Ghedini
Bug: https://curl.haxx.se/mail/lib-2018-10/0118.html

Closes #3198

diff --git a/tests/runtests.pl b/tests/runtests.pl
index 5dce330425f6340607a72942bca9991b2471bd6b..6a644ed0d517e9166e3fa6d17a16a39d7c55de4d 100755 (executable)
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -151,7 +151,7 @@ my $NEGTELNETPORT;       # TELNET server port with negotiation
 
 my $srcdir = $ENV{'srcdir'} || '.';
 my $CURL="../src/curl".exe_ext(); # what curl executable to run on the tests
-my $VCURL="curl";   # what curl binary to use to verify the servers with
+my $VCURL=$CURL;   # what curl binary to use to verify the servers with
                    # VCURL is handy to set to the system one when the one you
                    # just built hangs or crashes and thus prevent verification
 my $DBGCURL=$CURL; #"../src/.libs/curl";  # alternative for debugging