perlasm/x86_64-xlate.pl: fix pair of typo-bugs in the new cfi_directive.

.cfi_{start|end}proc and .cfi_def_cfa were not tracked.

(Imported from upstream's 88be429f2ed04f0acc71f7fd5456174c274f2f76.)

Change-Id: I6abd480255218890349d139b62f62144b34c700d
Reviewed-on: https://boringssl-review.googlesource.com/13905
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>

crypto/perlasm/x86_64-xlate.pl

diff --git a/crypto/perlasm/x86_64-xlate.pl b/crypto/perlasm/x86_64-xlate.pl
index 2dc7787..be90aa9 100755
--- a/crypto/perlasm/x86_64-xlate.pl
+++ b/crypto/perlasm/x86_64-xlate.pl
@@ -628,7 +628,7 @@
 	my	$self = {};
 	my	$ret;
 
-	if ($$line =~ s/^\s*\.cfi_(\w+)\s+//) {
+	if ($$line =~ s/^\s*\.cfi_(\w+)\s*//) {
 	    bless $self,$class;
 	    $ret = $self;
 	    undef $self->{value};
@@ -651,7 +651,7 @@
 			&& do {	$cfa_rsp -= 1*eval($$line) if ($cfa_reg eq "%rsp");
 				last;
 			      };
-	    /def_cfa/	&& do {	if ($$line =~ /(%r\w+)\s*,\s*(\.+)/) {
+	    /def_cfa/	&& do {	if ($$line =~ /(%r\w+)\s*,\s*(.+)/) {
 				    $cfa_reg = $1;
 				    $cfa_rsp = -1*eval($2) if ($cfa_reg eq "%rsp");
 				}