correct error printout and stop in postw90.x #534
Merged
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Error handling in the main postw90.x executable had not been updated to most recent design.
The program (standalone) should quit after printing the error message. This differs from the library mode where the error mechanism is cleared and an integer error code is returned to the calling program. postw90.x was using the library routine without calling "stop" afterwards as required.
This commit includes a new function "print_error_halt" which prints the error and halts. It is used only in the postw90.x main executable. The wannier90.x (which is a wrapper around the library) does not need this.
This amounts to a bugfix relating to PR #531