Don't try to revive a placeholder for a degenerate polygon with negative area

CHANGELOG.md

@@ -1,3 +1,7 @@
+## 1.12.11
+
+* Don't try to revive a placeholder for a degenerate polygon that had negative area
+
 ## 1.12.10
 
 * Pass feature IDs through in tile-join

tile.cpp

@@ -498,7 +498,11 @@ void *partial_feature_worker(void *v) {
 				}
 
 				if (geoms[g].size() < 3) {
-					geoms[g] = revive_polygon(before, area / geoms.size(), z, line_detail);
+					if (area > 0) {
+						geoms[g] = revive_polygon(before, area / geoms.size(), z, line_detail);
+					} else {
+						geoms[g].clear();
+					}
 				}
 			}
 		}

version.hpp

@@ -1 +1 @@
-#define VERSION "tippecanoe v1.12.10\n"
+#define VERSION "tippecanoe v1.12.11\n"