depends: Use $(package)_file_name when downloading from the fallback

depends/funcs.mk

@@ -37,7 +37,7 @@ endef
 
 define fetch_file
     ( $(call fetch_file_inner,$(1),$(2),$(3),$(4),$(5)) || \
-      $(call fetch_file_inner,$(1),$(FALLBACK_DOWNLOAD_PATH),$(3),$(4),$(5)))
+      $(call fetch_file_inner,$(1),$(FALLBACK_DOWNLOAD_PATH),$(4),$(4),$(5)))
 endef
 
 # Shell script to create a source tarball in $(1)_source from local directory