Fix a small leak

Signed-off-by: falkTX <falktx@falktx.com>

data/valgrind.sh

@@ -29,3 +29,6 @@ while true; do
 done
 
 wait ${PID}
+
+# export PYTHONMALLOC=malloc
+# valgrind --leak-check=full --show-leak-kinds=all --track-origins=yes --gen-suppressions=all --suppressions=./data/valgrind.supp python3 ./source/frontend/carla

source/backend/utils/Windows.cpp

@@ -48,6 +48,7 @@ double carla_get_desktop_scale_factor()
     if (::Display* const display = XOpenDisplay(nullptr))
     {
         XrmInitialize();
+
         if (char* const rms = XResourceManagerString(display))
         {
             if (const XrmDatabase sdb = XrmGetStringDatabase(rms))
@@ -64,8 +65,11 @@ double carla_get_desktop_scale_factor()
                     if (carla_isNotZero(dpi))
                         return dpi / 96;
                 }
+
+                XrmDestroyDatabase(sdb);
             }
         }
+
         XCloseDisplay(display);
     }
 #endif