Update various comments.
diff --git a/jemalloc/src/jemalloc.c b/jemalloc/src/jemalloc.c
index 2aebc51..f5434c7 100644
--- a/jemalloc/src/jemalloc.c
+++ b/jemalloc/src/jemalloc.c
@@ -421,8 +421,8 @@
 			if ((opts = getenv(envname)) != NULL) {
 				/*
 				 * Do nothing; opts is already initialized to
-				 * the value of the JEMALLOC_OPTIONS
-				 * environment variable.
+				 * the value of the MALLOC_CONF environment
+				 * variable.
 				 */
 			} else {
 				/* No configuration specified. */