quartz: Declare a function static

[Andrew Talbot]

Changelog:
    quartz: Declare a function static.

diff -urN a/dlls/quartz/parser.c b/dlls/quartz/parser.c
--- a/dlls/quartz/parser.c	2006-10-13 11:27:23.000000000 +0100
+++ b/dlls/quartz/parser.c	2007-01-23 19:07:36.000000000 +0000
@@ -596,7 +596,7 @@
     MediaSeekingImpl_GetPreroll
 };
 
-HRESULT WINAPI Parser_OutputPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
+static HRESULT WINAPI Parser_OutputPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 {
     Parser_OutputPin *This = (Parser_OutputPin *)iface;