bugfix: consistent use of 'int' for alpha values (#3187373)

WindowMenuAccessor returned strange alpha values if compiled
with 'g++ -Os'; unholy black magic happens if template<int> faces
functions returning only 'usigned char'.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/WorkspaceNameTool.cc b/src/WorkspaceNameTool.cc
index fc944f9..3a4b275 100644
--- a/src/WorkspaceNameTool.cc
+++ b/src/WorkspaceNameTool.cc
@@ -147,7 +147,7 @@ void WorkspaceNameTool::reRender() {
     }
 }
 
-void WorkspaceNameTool::renderTheme(unsigned char alpha) {
+void WorkspaceNameTool::renderTheme(int alpha) {
     
     m_button.setJustify(m_theme->justify());
     m_button.setBorderWidth(m_theme->border().width());