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authorLennart Poettering <lennart@poettering.net>2013-11-19 01:15:31 +0100
committerLennart Poettering <lennart@poettering.net>2013-11-20 19:36:14 +0100
commit725d7e6cebcafef3bd4adbf76c8fa73a9b18972e (patch)
tree0f11bd0acef710d24a462b66555a2ccfe0249494 /src/libsystemd-bus
parent994e023433e020e2b3f683d5d1f2c974db580447 (diff)
libudev: always return NULL in _unref() APIs
Returning anything else but NULL would suggest the caller's reference might still be valid, but it isn't, because the caller just invoked _unref() after all. This turns the return value into a typesafe shortcut that allows unreffing and resetting a reference in one line. In contrast to solutions for this which take a pointer to a pointer to accomplish the same this solution is just syntactic sugar the developer can make use of but doesn't have to, and this is particularly useful when immediately unreffing objects returned by function calls.
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