Call flush_prev_message() before getch(), cancelable_get_line() and

mpr_formatted_output(). Fixes 2647846.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@9275 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on February 28, 2009
E4I25AZQOBBI4KOLVRGSOZJNPC7XCSUUCE7HT7VVGS54J2AVLPHQC
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