[PATCH] testbot/Build: Only rebuild impacted test executables.

[Francois Gouget]

If a patch impacts a module but not its tests, don't try to rebuild the
corresponding test executable. This fixes build failures when the module
does not have tests in the first place.

Signed-off-by: Francois Gouget 
---
 testbot/bin/build/Build.pl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/testbot/bin/build/Build.pl b/testbot/bin/build/Build.pl
index 1287f6db5..54b1aeae1 100755
--- a/testbot/bin/build/Build.pl
+++ b/testbot/bin/build/Build.pl
@@ -78,6 +78,7 @@ sub BuildTestExecutables($$$)
   my (@BuildDirs, @TestExes);
   foreach my $TestInfo (values %{$Impacts->{Tests}})
   {
+    next if (!$TestInfo->{UnitCount});
     push @BuildDirs, $TestInfo->{Path};
     my $TestExe = "$TestInfo->{Path}/$TestInfo->{ExeBase}.exe";
     push @TestExes, $TestExe;