Fix for Dalvik compile error on CyanogenMod 9

I started getting this error while compiling CyanogenMod 9 (Android 4.0.x) last week: dalvik/vm/native/dalvik_system_Zygote.cpp: In function ‘int setrlimitsFromArray(ArrayObject*)’: dalvik/vm/native/dalvik_system_Zygote.cpp:199:19: error: aggregate ‘setrlimitsFromArray(ArrayObject*)::rlimit rlim’ has incomplete type and cannot be defined struct rlimit rlim; ^ dalvik/vm/native/dalvik_system_Zygote.cpp:222:43: error: ‘setrlimit’ was not declared in this scope err = setrlimit(contents[0], &rlim); ^ make: *** [out/host/linux-x86/obj/SHARED_LIBRARIES/libdvm_intermediates/native/dalvik_system_Zygote.o] Error 1 make: *** […]