ICU-21498 Improve comment in uprv_tzname
diff --git a/icu4c/source/common/putil.cpp b/icu4c/source/common/putil.cpp
index 3ed6a05..9386647 100644
--- a/icu4c/source/common/putil.cpp
+++ b/icu4c/source/common/putil.cpp
@@ -1139,7 +1139,7 @@
#endif
if (tzid != NULL && isValidOlsonID(tzid)
#if U_PLATFORM == U_PF_SOLARIS
- /* When TZ equals localtime on Solaris, check the /etc/localtime file. */
+ /* Don't misinterpret TZ "localtime" on Solaris as a time zone name. */
&& uprv_strcmp(tzid, TZ_ENV_CHECK) != 0
#endif
) {