[windows] use DataDir for registry key, not InstallDir

src/compat/compat.c

@@ -10,7 +10,7 @@
 #include <stdio.h>
 
 char* notcurses_data_dir(void){
-  const char key[] = "Software\\Notcurses\\InstallDir";
+  const char key[] = "Software\\Notcurses\\DataDir";
   DWORD plen = 0;
   LSTATUS r = RegGetValueA(HKEY_CURRENT_USER, key,
 			   NULL, RRF_RT_REG_SZ, NULL,
@@ -27,6 +27,7 @@ char* notcurses_data_dir(void){
     free(val);
     return NULL;
   }
+fprintf(stderr, "REGISTRY VALUE [%s]\n", val);
   return val;
 }
 

tools/notcurses-installer.ifp

@@ -1316,9 +1316,9 @@ dll
 [Licence_End]
 [Registry]
 HKEY_CURRENT_USER
-Software\Notcurses\InstallDir
+Software\Notcurses\DataDir
 
-<InstallPath>
+<InstallPath>\data
 1
 [Variables]
 [SCs]