Fix typos leading to state not being saved

drmr.c

@@ -543,7 +543,7 @@ restore_state(LV2_Handle                  instance,
 
 static const void* extension_data(const char* uri) {
   static const LV2_State_Interface state_iface = { save_state, restore_state };
-  if (!strcmp(uri, LV2_STATE_URI "#Interface")) return &state_iface;
+  if (!strcmp(uri, LV2_STATE__interface)) return &state_iface;
   return NULL;
 }
 

drmr.ttl

@@ -19,7 +19,7 @@
   doap:license <http://usefulinc.com/doap/licenses/gpl> ;
   lv2:requiredFeature urid:map ;
   ui:ui <http://github.com/nicklan/drmr#ui> ;
-  lv2:extensionData <http://lv2plug.in/ns/ext/state#Interface> ;
+  lv2:extensionData <http://lv2plug.in/ns/ext/state#interface> ;
   lv2:port [
     a lv2:InputPort , atom:AtomPort;
     atom:bufferType atom:Sequence ;