[evince] Fix build with GCC 6

[Michael Catanzaro <mcatanzaro src gnome org>]

commit a541fca0b5bd5dd3caa36cea3e9aa35ecc9fab6d
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Tue May 17 06:21:15 2016 -0500

    Fix build with GCC 6
    
    Both usages looooook safe.

 backend/comics/comics-document.c |    5 ++++-
 libdocument/ev-document-misc.c   |    3 +++
 2 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/backend/comics/comics-document.c b/backend/comics/comics-document.c
index a861f0d..1d15428 100644
--- a/backend/comics/comics-document.c
+++ b/backend/comics/comics-document.c
@@ -238,9 +238,11 @@ comics_decompress_temp_dir (const gchar *command_decompress_tmp,
        return FALSE;
 }
 
-/* This function shows how to use the choosen command for decompressing a
+/* This function shows how to use the chosen command for decompressing a
  * comic book file. It modifies fields of the ComicsDocument struct with 
  * this information */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
 static gboolean 
 comics_generate_command_lines (ComicsDocument *comics_document, 
                               GError         **error)
@@ -296,6 +298,7 @@ comics_generate_command_lines (ComicsDocument *comics_document,
        }
 
 }
+#pragma GCC diagnostic pop
 
 /* This function chooses an external command for decompressing a comic 
  * book based on its mime tipe. */
diff --git a/libdocument/ev-document-misc.c b/libdocument/ev-document-misc.c
index 6d3c820..a3ba592 100644
--- a/libdocument/ev-document-misc.c
+++ b/libdocument/ev-document-misc.c
@@ -528,6 +528,8 @@ ev_document_misc_format_date (GTime utime)
        char s[256];
        const char fmt_hack[] = "%c";
        size_t len;
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-y2k"
 #ifdef HAVE_LOCALTIME_R
        struct tm t;
        if (time == 0 || !localtime_r (&time, &t)) return NULL;
@@ -537,6 +539,7 @@ ev_document_misc_format_date (GTime utime)
        if (time == 0 || !(t = localtime (&time)) ) return NULL;
        len = strftime (s, sizeof (s), fmt_hack, t);
 #endif
+#pragma GCC diagnostic pop
 
        if (len == 0 || s[0] == '\0') return NULL;