diff --git a/src/option.c b/src/option.c
index 2c5e88b..06e569c 100644
--- a/src/option.c
+++ b/src/option.c
@@ -3212,6 +3212,8 @@
 		    options[opt_idx].def_val[VI_DEFAULT] = buf;
 		    options[opt_idx].flags |= P_DEF_ALLOCED;
 		}
+		else
+		    vim_free(buf); /* cannot happen */
 	    }
 	    if (mustfree)
 		vim_free(cdpath);
@@ -4262,6 +4264,7 @@
 		 * 'foldmethod' becomes "marker" instead of "diff" and that
 		 * "wrap" gets set. */
 		if (curwin->w_p_diff
+			&& opt_idx >= 0  /* shut up coverity warning */
 			&& (options[opt_idx].indir == PV_FDM
 			    || options[opt_idx].indir == PV_WRAP))
 		    goto skip;