Fix test for capability sweep in shp_hit_mine()

Bogus array index, unpredictable result, can crash the server.  Broken
in commit ef7ea893, v4.3.24.
(cherry picked from commit 054eba7a1d5f92d80ac340787cb8d7798a20ec1e)

diff --git a/src/lib/subs/shpsub.c b/src/lib/subs/shpsub.c
index 11353607f043fe04ae5311bcbe7c4c77136f58b6..fb44fe2c463fd8e415453766fed8a07ee2c358ee 100644 (file)
--- a/src/lib/subs/shpsub.c
+++ b/src/lib/subs/shpsub.c
@@ -708,7 +708,7 @@ shp_hit_mine(struct shpstr *sp)
     nreport(sp->shp_own, N_HIT_MINE, 0, 1);
 
     m = MINE_DAMAGE();
-    if (mchr[sp->shp_uid].m_flags & M_SWEEP)
+    if (mchr[sp->shp_type].m_flags & M_SWEEP)
        m /= 2.0;
 
     shipdamage(sp, ldround(m, 1));