File rtmidi-cmake.patch of Package mingw64-rtmidi

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3a85a03..a456fe4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -262,7 +262,7 @@ install(TARGETS ${LIB_TARGETS}
 export(PACKAGE RtMidi)
 
 # Set installation path for CMake files.
-set(RTMIDI_CMAKE_DESTINATION share/rtmidi)
+set(RTMIDI_CMAKE_DESTINATION lib/cmake/rtmidi)
 
 # Export library target (build-tree).
 export(EXPORT RtMidiTargets