[tools] winetest/build-patterns: Reset the palette for each page.

[Francois Gouget]

Otherwise pages with fewer reports use a palette designed for the full 
range of failure counts of the main page, losing contrast for no reason.

Signed-off-by: Francois Gouget <fgouget(a)codeweavers.com>
---
 winetest/build-patterns | 1 +
 1 file changed, 1 insertion(+)

diff --git a/winetest/build-patterns b/winetest/build-patterns
index e6640d69c..130294ea1 100755
--- a/winetest/build-patterns
+++ b/winetest/build-patterns
@@ -897,6 +897,7 @@ EOF
     foreach my $testname (sort keys %tests)
     {
         my $test = $tests{$testname};
+        $test->{colors} = {};
 
         my $first = @sortedbuilds;
         my $last = -1;
-- 
2.20.1