[librsvg] win32/rsvg-rust.mak: Fix 'clean' target

[Chun-wei Fan <fanchunwei src gnome org>]

commit 311b9f0ae10d353ae54f47955b1d91c79aab4458
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Feb 23 17:57:55 2018 +0800

    win32/rsvg-rust.mak: Fix 'clean' target
    
    We need to go into $(srcroot)/rsvg_internals to do the cleanups, as
    well.

 win32/rsvg-rust.mak | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/win32/rsvg-rust.mak b/win32/rsvg-rust.mak
index 01b3677f..65e80aef 100644
--- a/win32/rsvg-rust.mak
+++ b/win32/rsvg-rust.mak
@@ -46,7 +46,7 @@ vs$(VSVER)\$(CFG)\$(PLAT)\obj\rsvg_internals\$(RUST_TARGET)-pc-windows-msvc\$(CF
 
 clean:
        @set CARGO_TARGET_DIR=..\win32\vs$(VSVER)\$(CFG)\$(PLAT)\obj\rsvg_internals
-       @cd ..
+       @cd ..\rsvg_internals
        @$(CARGO) clean
        @cd ..\win32\vs$(VSVER)
        @set CARGO_TARGET_DIR=