Fix function declarations and hide local functions

Author: sebastinas

zathura/document.c

@@ -17,6 +17,7 @@
 #include "page.h"
 #include "plugin.h"
 #include "content-type.h"
+#include "internal.h"
 
 #define DIGEST_SIZE 32
 

zathura/internal.h

@@ -26,6 +26,6 @@ struct zathura_document_information_entry_s {
  * @param document The document
  * @return The plugin or NULL
  */
-zathura_plugin_t* zathura_document_get_plugin(zathura_document_t* document);
+const zathura_plugin_t* zathura_document_get_plugin(zathura_document_t* document);
 
 #endif // INTERNAL_H

zathura/render.h

@@ -160,7 +160,7 @@ struct zathura_render_request_class_s {
  * Returns the type of the render request.
  * @return the type
  */
-GType zathura_page_render_info_get_type(void) G_GNUC_CONST;
+GType zathura_render_request_get_type(void) G_GNUC_CONST;
 /**
  * Create a render request object
  * @param renderer a renderer object

zathura/utils.c

@@ -357,7 +357,7 @@ GdkAtom* get_selection(zathura_t* zathura) {
   return selection;
 }
 
-char* write_first_page_column_list(unsigned int* first_page_columns, unsigned int size) {
+static char* write_first_page_column_list(unsigned int* first_page_columns, unsigned int size) {
   if (first_page_columns == NULL) {
     return NULL;
   }
@@ -374,7 +374,7 @@ char* write_first_page_column_list(unsigned int* first_page_columns, unsigned in
   return g_string_free_and_steal(buffer);
 }
 
-unsigned int* parse_first_page_column_list(const char* first_page_column_list, unsigned int* size) {
+static unsigned int* parse_first_page_column_list(const char* first_page_column_list, unsigned int* size) {
   if (first_page_column_list == NULL || size == NULL) {
     return NULL;
   }