[PATCH 3/7] Fix bug in comparing gases.

[Anton Lundin]

Dive plan contained o2 as 209, but cylinders defaulted to o2 0, so we
might have crashes here when there was no gasidx found.

Signed-off-by: Anton Lundin <glance at acc.umu.se>
---
 planner.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/planner.c b/planner.c
index 9e9ed47..863469b 100644
--- a/planner.c
+++ b/planner.c
@@ -4,6 +4,7 @@
  *
  * (c) Dirk Hohndel 2013
  */
+#include <assert.h>
 #include <unistd.h>
 #include <ctype.h>
 #include <string.h>
@@ -404,14 +405,16 @@ static struct gaschanges *analyze_gaslist(struct diveplan *diveplan, struct dive
 				i++;
 			}
 			gaschanges[i].depth = dp->depth;
+			gaschanges[i].gasidx = -1;
 			do {
-				if (dive->cylinder[j].gasmix.o2.permille == dp->o2 &&
-				    dive->cylinder[j].gasmix.he.permille == dp->he) {
+				if (get_o2(&dive->cylinder[j].gasmix) == dp->o2 &&
+				    get_he(&dive->cylinder[j].gasmix) == dp->he) {
 					gaschanges[i].gasidx = j;
 					break;
 				}
 				j++;
 			} while (j < MAX_CYLINDERS);
+			assert(gaschanges[i].gasidx != -1);
 		}
 		dp = dp->next;
 	}
-- 
1.8.3.2