dsound: Move make_fir to the dsound directory.

Signed-off-by: Francois Gouget <fgouget@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dlls/dsound/make_fir

@@ -136,8 +136,7 @@ foreach my $testfreq(@testfreqs) {
 
 # Now actually print the FIR to a C header file
 
-chdir ".." if -f "./make_fir";
-open FILE, ">dlls/dsound/fir.h";
+open FILE, ">", "fir.h";
 select FILE;
 
 print "/* generated by tools/make_fir; DO NOT EDIT! */\n";