Fixed detection of a project in projects.txt

Before the fix, requirements soft-update was used for projects that are
in the file.

Change-Id: I095d42521f54b45a6b13837e2f8375fa04532faa
Closes-Bug: #1469067
diff --git a/inc/python b/inc/python
index 07a811e..9a7cea0 100644
--- a/inc/python
+++ b/inc/python
@@ -195,7 +195,7 @@
 function is_in_projects_txt {
     local project_dir=$1
     local project_name=$(basename $project_dir)
-    return grep "/$project_name\$" $REQUIREMENTS_DIR/projects.txt >/dev/null
+    grep -q "/$project_name\$" $REQUIREMENTS_DIR/projects.txt
 }
 
 # ``pip install -e`` the package, which processes the dependencies