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utils: Don't set or clear flags that don't need setting or clearing 

Change-Id: I0e7fb507ac09b15e45e1ff8501ecfca67afa5217
This commit is contained in:
Sean Bright 2018-12-11 10:06:15 -05:00
parent 82473227be
commit bedf16b041
1 changed files with 8 additions and 0 deletions
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8
main/utils.c
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@ -2730,9 +2730,17 @@ int __ast_fd_set_flags(int fd, int flags, enum ast_fd_flag_operation op,
switch (op) {
case AST_FD_FLAG_SET:
if ((f & flags) == flags) {
/* There is nothing to set */
return 0;
}
f |= flags;
break;
case AST_FD_FLAG_CLEAR:
if (!(f & flags)) {
/* There is nothing to clear */
return 0;
}
f &= ~flags;
break;
default: