vkd3d-common: Add strequal_mixed between WCHAR and ASCII.

Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>

include/private/vkd3d_string.h

@@ -30,6 +30,7 @@ WCHAR *vkd3d_dup_demangled_entry_point(const char *str);
 char *vkd3d_dup_demangled_entry_point_ascii(const char *str);
 
 bool vkd3d_export_strequal(const WCHAR *a, const WCHAR *b);
+bool vkd3d_export_strequal_mixed(const WCHAR *a, const char *b);
 bool vkd3d_export_strequal_substr(const WCHAR *a, size_t n, const WCHAR *b);
 
 char *vkd3d_strdup(const char *str);

libs/vkd3d-common/string.c

@@ -82,6 +82,21 @@ bool vkd3d_export_strequal(const WCHAR *a, const WCHAR *b)
     return *a == *b;
 }
 
+bool vkd3d_export_strequal_mixed(const WCHAR *a, const char *b)
+{
+    if (!a || !b)
+        return false;
+
+    while (*a != '\0' && *b != '\0')
+    {
+        if (*a != *b)
+            return false;
+        a++;
+        b++;
+    }
+    return *a == *b;
+}
+
 bool vkd3d_export_strequal_substr(const WCHAR *a, size_t expected_n, const WCHAR *b)
 {
     size_t n = 0;