Close some file descriptors that were left dangling before

geojson.c

@@ -1151,10 +1151,7 @@ void radix1(int *geomfds_in, int *indexfds_in, int inputs, int prefix, int split
 			exit(EXIT_FAILURE);
 		}
 
-		if (indexst.st_size == 0) {
+		if (indexst.st_size != 0) {
-			continue;  // no indices from this input
-		}
-
 			struct index *indexmap = mmap(NULL, indexst.st_size, PROT_READ, MAP_PRIVATE, indexfds_in[i], 0);
 			if (indexmap == MAP_FAILED) {
 				fprintf(stderr, "fd %lld, len %lld\n", (long long) indexfds_in[i], (long long) indexst.st_size);
@@ -1203,6 +1200,7 @@ void radix1(int *geomfds_in, int *indexfds_in, int inputs, int prefix, int split
 				perror("unmap geom");
 				exit(EXIT_FAILURE);
 			}
+		}
 
 		if (close(geomfds_in[i]) < 0) {
 			perror("close geom");

tile.cc

@@ -1343,6 +1343,17 @@ int traverse_zooms(int *geomfd, off_t *geom_size, char *metabase, char *stringpo
 		}
 	}
 
+	int j;
+	for (j = 0; j < TEMP_FILES; j++) {
+		// Can be < 0 if there is only one source file, at z0
+		if (geomfd[j] >= 0) {
+			if (close(geomfd[j]) != 0) {
+				perror("close geom");
+				exit(EXIT_FAILURE);
+			}
+		}
+	}
+
 	if (!quiet) {
 		fprintf(stderr, "\n");
 	}