build: Always define Extra-Depends

Fixes:

    ob-gencontrol: Generating control files for package "busybox"...
    ob-gencontrol: Warning: Unknown substitution variable "Extra-Depends"

1 files changed, 2 insertions, 0 deletions

diff --git a/build b/build
index c5de4b2..8f63f44 100755
--- a/build
+++ b/build
@@ -95,6 +95,8 @@ install: build
 	fi; \
 	if config_enabled FEATURE_WGET_OPENSSL; then \
 		printf 'Extra-Depends: wolfutil\n' >>busybox.substvars; \
+	else \
+		printf 'Extra-Depends:\n' >>busybox.substvars; \
 	fi
 	oh-installfiles
 	oh-shlibdeps