fix: windows src_path lowercase by os.path.normcase but file_name is origin format (#553)

Co-authored-by: 许佳玥 <[email protected]>

Author: amos-chen

diff_cover/violationsreporters/violations_reporter.py

@@ -133,7 +133,7 @@ def get_src_path_line_nodes_clover(xml_document, src_path):
 
     def _measured_source_path_matches(self, package_name, file_name, src_path):
         # find src_path in any of the source roots
-        if not src_path.endswith(file_name):
+        if not src_path.endswith(util.to_unix_path(file_name)):
             return False
 
         norm_src_path = os.path.normcase(src_path)