puzzles: resync with upstream

This brings the upstream version to 9aa7b7c (with some of my changes as
well).

Change-Id: I5bf8a3e0b8672d82cb1bf34afc07adbe12a3ac53

1 files changed, 2 insertions, 0 deletions

diff --git a/apps/plugins/puzzles/src/mines.c b/apps/plugins/puzzles/src/mines.c
index c9d9852573..ae717d3f37 100644
--- a/apps/plugins/puzzles/src/mines.c
+++ b/apps/plugins/puzzles/src/mines.c
@@ -258,6 +258,8 @@ static const char *validate_params(const game_params *params, bool full)
      */
     if (full && params->unique && (params->w <= 2 || params->h <= 2))
         return "Width and height must both be greater than two";
+    if (params->n < 0)
+        return "Mine count may not be negative";
     if (params->n > params->w * params->h - 9)
         return "Too many mines for grid size";
     if (params->n < 1)