When a landing pad is calculated in a program that is compiled
for micromips with -fPIC flag, it will point to an even address.
Such an error will cause a segmentation fault, as the instructions
in micromips are aligned on odd addresses. This patch sets the
last bit of the offset where a landing pad is, to 1, which will
effectively be an odd address and point to the instruction exactly.
Patch D52985 fixed this issue for -static compilation.