fix: drop leading garbage from exact glob pattern

Due to an unfortunate mixup of `resize()` vs. `reserve()` for the buffer
containing the generated regex pattern for matching exact file paths,
the buffer had garbage at the start leading to file searches not
finding files if no wildcards were in effect.

Author: zao

engine/system/win/sys_main.cpp

@@ -150,7 +150,8 @@ bool GlobMatch(const std::filesystem::path& glob, const std::filesystem::path& f
 	// If no wildcards are present, test file path verbatim.
 	// We use a regex rather than string comparisons to make it case-insensitive.
 	if (globStr.find_first_of("?*") == std::string::npos) {
-		buf.resize(globStr.size());
+		buf.reserve(globStr.size() * 3); // Decent estimate of final pattern size.
+
 		for (char ch : globStr) {
 			fmt::format_to(fmt::appender(buf), "[{}]", ch);
 		}