libresetprop: use the latest header

Change-Id: I24656393cc84b1a978338fa587c535797d81c2a9
diff --git a/twrp-functions.cpp b/twrp-functions.cpp
index b1e9b26..0661917 100755
--- a/twrp-functions.cpp
+++ b/twrp-functions.cpp
@@ -63,7 +63,7 @@
 }
 
 #ifdef TW_INCLUDE_LIBRESETPROP
-    #include <resetprop.h>
+    #include <resetprop.hpp>
 #endif
 
 struct selabel_handle *selinux_handle;