[gtk-doc] check: use the right comparision operator for strings

[Stefan Kost <stefkost src gnome org>]

commit a04d755fcc19f780623f3b1bc30cf9e9915bd5fa
Author: Stefan Kost <ensonic users sf net>
Date:   Tue Sep 21 10:12:27 2010 +0300

    check: use the right comparision operator for strings

 gtkdoc-check.in |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtkdoc-check.in b/gtkdoc-check.in
index 22991b3..e94c753 100755
--- a/gtkdoc-check.in
+++ b/gtkdoc-check.in
@@ -58,11 +58,11 @@ my $checks = 4;
 my $makefile = (-f 'Makefile.am') ? 'Makefile.am' : 'Makefile';
 
 my $DOC_MODULE = $ENV{"DOC_MODULE"};
-if (!defined($DOC_MODULE) or $DOC_MODULE == "") {
+if (!defined($DOC_MODULE) or $DOC_MODULE eq "") {
     $DOC_MODULE = &Grep('^\s*DOC_MODULE\s*=\s*(\S+)', $makefile, 'DOC_MODULE');
 }
 my $DOC_MAIN_SGML_FILE = $ENV{"DOC_MAIN_SGML_FILE"};
-if (!defined($DOC_MAIN_SGML_FILE) or $DOC_MAIN_SGML_FILE == "") {
+if (!defined($DOC_MAIN_SGML_FILE) or $DOC_MAIN_SGML_FILE eq "") {
     $DOC_MAIN_SGML_FILE = &Grep('^\s*DOC_MAIN_SGML_FILE\s*=\s*(\S+)', $makefile, 'DOC_MAIN_SGML_FILE');
     $DOC_MAIN_SGML_FILE =~ s/\$\(DOC_MODULE\)/$DOC_MODULE/;
 }