external/hypen: Fix for pre-C99

Change-Id: Iff0692768cbcaa68f79404a9a933044fe8bb9096
(cherry picked from commit e21cb524274c6719fe953001a19ba2124f1e8385)
Fold hyphen-c99.patch.0 into hyphen-fdo48017-wfopen.patch

Change-Id: I2f866aa16704bc5492e0e0b78136fdfe41caa7a5
(cherry picked from commit 24819d71ec9ce73840e82791c0219fe012e45c37)