reg/tests: Update reg_open() and reg_open_() definitions.

programs/reg/tests/add.c

@@ -81,12 +81,11 @@ void verify_reg_nonexist_(const char *file, unsigned line, HKEY hkey, const char
         (value && *value) ? value : "(Default)", err);
 }
 
-void open_key_(const char *file, unsigned line, const HKEY base, const char *path,
-               const DWORD sam, HKEY *hkey)
+void open_key_(const char *file, unsigned line, HKEY root, const char *path, REGSAM sam, HKEY *hkey)
 {
     LONG err;
 
-    err = RegOpenKeyExA(base, path, 0, KEY_READ|sam, hkey);
+    err = RegOpenKeyExA(root, path, 0, KEY_READ|sam, hkey);
     lok(err == ERROR_SUCCESS, "RegOpenKeyExA failed: got error %d\n", err);
 }
 

programs/reg/tests/reg_test.h

@@ -46,9 +46,8 @@ void verify_reg_(const char *file, unsigned line, HKEY hkey, const char *value,
 #define verify_reg_nonexist(k,v) verify_reg_nonexist_(__FILE__,__LINE__,k,v)
 void verify_reg_nonexist_(const char *file, unsigned line, HKEY hkey, const char *value);
 
-#define open_key(b,p,s,k) open_key_(__FILE__,__LINE__,b,p,s,k)
-void open_key_(const char *file, unsigned line, const HKEY base, const char *path,
-               const DWORD sam, HKEY *hkey);
+#define open_key(r,p,s,k) open_key_(__FILE__,__LINE__,r,p,s,k)
+void open_key_(const char *file, unsigned line, HKEY root, const char *path, REGSAM sam, HKEY *hkey);
 
 #define close_key(k) close_key_(__FILE__,__LINE__,k)
 void close_key_(const char *file, unsigned line, HKEY hkey);