mail/altermime fails to build using clang:

[...snip...]

===>  Building for altermime-0.3.11.a1
clang -Wall -Werror -g -I. -O2  -c strstack.c
clang -Wall -Werror -g -I. -O2  -c mime_alter.c
clang -Wall -Werror -g -I. -O2  -c ffget.c
ffget.c:553:20: error: equality comparison with extraneous parentheses [-Werror,-Wparentheses-equality]
                                if ( (*crlfpos == '\r') )
                                      ~~~~~~~~~^~~~~~~
ffget.c:553:20: note: remove extraneous parentheses around the comparison to silence this warning
                                if ( (*crlfpos == '\r') )
                                     ~         ^      ~
ffget.c:553:20: note: use '=' to turn this equality comparison into an assignment
                                if ( (*crlfpos == '\r') )
                                               ^~
                                               =
1 error generated.
*** [ffget.o] Error code 1

Stop in /usr/ports/mail/altermime/work/altermime-0.3.11.a1.
*** [do-build] Error code 1

Stop in /usr/ports/mail/altermime.
*** [/usr/ports/mail/altermime/work/.build_done.altermime._usr_local] Error code 1

Stop in /usr/ports/mail/altermime.

Fix: A source patch under files/

# cat files/patch-::ffget.c


-                               if ( (*crlfpos == '\r') )
+                               if ( *crlfpos == '\r' )
                                {
                                        f->linebreak = FFGET_LINEBREAK_CR;
                                        snprintf(f->lastbreak,sizeof(f->lastbreak),"\r");--SpFPNNabgQPyNncBF056ZxTcRG5oiLbFXHWOW4UzwjA9rUM2
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--- ffget.c.orig        2012-10-01 19:45:30.000000000 +0200
+++ ffget.c     2012-10-01 19:45:51.000000000 +0200
@@ -550,7 +550,7 @@
                                // if we have another \r after it, in which case, we
                                // turn on SINGLE_DELIMETER_MODE.
How-To-Repeat: # cd /usr/ports/mail/altermime
# make