[tools] testbot/TestWTBS: The build tasks should not have test units.

[Francois Gouget]

First check that TestUnits was not accidentally set for build and
wine:build tasks, and then set it to an empty string (which is not
possible from via regular directives) which means any test unit will
show up as an error.

Signed-off-by: Francois Gouget 
---
 testbot/tests/TestWTBS | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/testbot/tests/TestWTBS b/testbot/tests/TestWTBS
index 7a5f29f3d..e9fa98edc 100755
--- a/testbot/tests/TestWTBS
+++ b/testbot/tests/TestWTBS
@@ -361,9 +361,10 @@ sub LoadTestInfo($)
     SetDefault($TestInfo, "tasks", "Status", "completed");
     SetDefault($TestInfo, "tasks", "HasTask", 1);
   }
-  if (defined $TestInfo->{"wine:build"}->{TestUnits})
+  foreach my $BuildType ("build", "wine:build")
   {
-    fail("wine:build.TestUnits should not be set");
+    next if (!defined $TestInfo->{$BuildType}->{TestUnits});
+    fail("$BuildType.TestUnits should not be set");
   }

# Then propagate the defaults
@@ -397,8 +398,9 @@ sub LoadTestInfo($)
       }
     }
   }
-  # Reset the inherited wine:build.TestUnits since it makes no sense
-  delete $TestInfo->{"wine:build"}->{TestUnits};
+  # build and wine:build tasks should not be running tests
+  $TestInfo->{"build"}->{TestUnits} = "";
+  $TestInfo->{"wine:build"}->{TestUnits} = "";

# Automatically check the Task: lines in simple cases
   foreach my $Build ("build", "wine:build")