[source] sdk: avoid using private repository clone urls as base repo entry

[LEDE Commits]

jow pushed a commit to source.git, branch master:
https://git.lede-project.org/ada6d9fecaf5147db51b7f27c548eb66590d8500

commit ada6d9fecaf5147db51b7f27c548eb66590d8500
Author: Jo-Philipp Wich <jo at mein.io>
AuthorDate: Thu Jan 19 20:41:46 2017 +0100

    sdk: avoid using private repository clone urls as base repo entry
    
    Only consider the repository origin url as valid base feed entry if it is a
    git://, http:// or https:// location.
    
    Signed-off-by: Jo-Philipp Wich <jo at mein.io>
---
 target/sdk/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/sdk/Makefile b/target/sdk/Makefile
index 496f025..c93e317 100644
--- a/target/sdk/Makefile
+++ b/target/sdk/Makefile
@@ -36,7 +36,7 @@ SDK_DIRS = \
 		$(STAGING_SUBDIR_HOST) \
 		$(STAGING_SUBDIR_TOOLCHAIN)
 
-BASE_FEED:=$(shell git config --get remote.origin.url 2>/dev/null | sed -ne 's/^/src-git base /p')
+BASE_FEED:=$(shell git config --get remote.origin.url 2>/dev/null | sed -ne '\#\(git\|http\|https\)://#s/^/src-git base /p')
 BASE_FEED:=$(if $(BASE_FEED),$(BASE_FEED),$(shell cd $(TOPDIR); LC_ALL=C git svn info 2>/dev/null | sed -ne 's/^URL: /src-gitsvn base /p'))
 BASE_FEED:=$(if $(BASE_FEED),$(BASE_FEED),$(shell cd $(TOPDIR); LC_ALL=C svn info 2>/dev/null | sed -ne 's/^URL: /src-svn base /p'))
 BASE_FEED:=$(if $(BASE_FEED),$(BASE_FEED),src-git base https://git.lede-project.org/source.git$(filter-out ;master,;$(shell git rev-parse --abbrev-ref HEAD)))