Edit out gcc-ism from soundtouch lib

This allows building mod_soundtouch in clang as clang doesn't support
gcc's -fcheck-new.

src/mod/applications/mod_soundtouch/Makefile.am

@@ -16,6 +16,7 @@ BUILT_SOURCES=$(LA)
 
 $(SNDT_SRC):
 	$(GETLIB) $(VERSION).tar.gz
+	sed -i'' -e 's/-fcheck-new//' $(top_srcdir)/libs/soundtouch/source/SoundTouch/Makefile.am
 
 $(SNDT_BUILD)/Makefile: $(SNDT_SRC)
 	mkdir -p $(SNDT_BUILD)/config/m4