fgetc(3) returns int.

The real WTF here might be that we copy an entire file byte-by-byte if
we ever take this path...

Bug: http://b/112146629
Bug: https://www.viva64.com/en/b/0579/
Test: builds
Change-Id: I8bfe6befa3851a839b499ac222c30d26a82bc075
1 file changed