0.5.2 - compile error on OSX using clang, non-void function should return a value

[github2bits]

As reported to Homebrew here, https://github.com/mxcl/homebrew/issues/12462 and documented in this gist of the build: https://gist.github.com/2815501

libinfinity-0.5.2 fails to compile using clang on OSX due a bug in the code where a non-void function 'inf_communication_method_received' does not return a value. This bug is acceptable with llvm-gcc or gcc, but clang is stricter. Clang is the default compiler on Apples these days. Atm, Homebrew works around this issue by forcing the library to be built using an alternate compiler. This might be raised to a blocker on the next version of OSX, Mt. Lion, because it will likely only have clang. Thanks for looking into this.

[phil]

Fixed in c3dfffb6486f68a651cf4a96486c931945a3b88f (master), thanks. (By using return_val_if_fail and using 0. Which does seem unclean, but is equivalent to the existing code.)