[librsvg] Don't pass --verbose to cargo build

[Federico Mena Quintero <federico src gnome org>]

commit d54556007d35611e03fb9e8c8d98093fec5bb460
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Sep 1 13:16:15 2017 -0500

    Don't pass --verbose to cargo build
    
    Quiet the build a little...

 Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index c212de8..048bdca 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -127,7 +127,7 @@ dist-hook:
 
 @abs_top_builddir@/rust/target/@RUST_TARGET_SUBDIR@/librsvg_internals.a: $(RUST_SOURCES)
        cd $(top_srcdir)/rust && \
-       CARGO_TARGET_DIR=@abs_top_builddir@/rust/target cargo build --verbose $(CARGO_RELEASE_ARGS)
+       CARGO_TARGET_DIR=@abs_top_builddir@/rust/target cargo build $(CARGO_RELEASE_ARGS)
 
 librsvg_@RSVG_API_MAJOR_VERSION@_la_CPPFLAGS = \
        -I$(top_srcdir)                         \