[Bug middle-end/91920] ggc 9.2.0 failing openmp compile on ppc64le

[robert at robbieab dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91920

--- Comment #13 from robert at robbieab dot com ---
The patch appears to fix both my test-case, and the original problem in
Darktable.

Darktable is using a 3 member array which does get modified, initialized to
-FLT_MAX and than used to store the max value for a set of RGB values.

Thank you for fixing this.