fixup! Avoid sharing cygheaps across Cygwin versions

There was a spurious double-quote in the error message that is shown
when the commit could not be determined.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

winsup/configure.ac

@@ -74,7 +74,7 @@ yes|auto)
         MSYS2_RUNTIME_COMMIT_SHORT="$(expr "$MSYS2_RUNTIME_COMMIT" : '\(.\{,8\}\)')"
         MSYS2_RUNTIME_COMMIT_HEX="0x${MSYS2_RUNTIME_COMMIT_SHORT}ul"
     else
-        AC_MSG_WARN([Could not determine msys2-runtime commit"])
+        AC_MSG_WARN([Could not determine msys2-runtime commit])
         MSYS2_RUNTIME_COMMIT=
         MSYS2_RUNTIME_COMMIT_SHORT=
         MSYS2_RUNTIME_COMMIT_HEX=0