shell32: Implement SHRegQueryValueA with RegQueryValueA.

dlls/shell32/shell32.spec

@@ -215,7 +215,7 @@
  505 stdcall SHRegCloseKey (long)
  506 stdcall SHRegOpenKeyA (long str long)
  507 stdcall SHRegOpenKeyW (long wstr long)
- 508 stub SHRegQueryValueA
+ 508 stdcall SHRegQueryValueA(long str ptr ptr)
  509 stdcall SHRegQueryValueExA(long str ptr ptr ptr ptr)
  510 stdcall SHRegQueryValueW (long long long long)
  511 stdcall SHRegQueryValueExW (long wstr ptr ptr ptr ptr)

dlls/shell32/shellreg.c

@@ -68,6 +68,16 @@ HRESULT WINAPI SHRegOpenKeyW (
 }
 
 /*************************************************************************
+ * SHRegQueryValueA   [SHELL32.508]
+ *
+ */
+HRESULT WINAPI SHRegQueryValueA(HKEY hkey, LPSTR lpSubKey, LPSTR lpValue, LPDWORD lpcbValue)
+{
+	TRACE("(%p %s %p %p)\n", hkey, debugstr_a(lpSubKey), lpValue, lpcbValue);
+	return RegQueryValueA(hkey, lpSubKey, lpValue, (LONG*)lpcbValue);
+}
+
+/*************************************************************************
  * SHRegQueryValueExA   [SHELL32.509]
  *
  */