Move update_if_necessary to util.c, will be necessary later

include/util.h

@@ -41,6 +41,13 @@ extern struct keyvalue_table_head by_child;
 int min(int a, int b);
 int max(int a, int b);
 
+/**
+ * Updates *destination with new_value and returns true if it was changed or false
+ * if it was the same
+ *
+ */
+bool update_if_necessary(uint32_t *destination, const uint32_t new_value);
+
 /**
  * Safe-wrapper around malloc which exits if malloc returns NULL (meaning that
  * there is no more memory available)

src/layout.c

@@ -31,17 +31,6 @@
 #include "log.h"
 #include "container.h"
 
-/*
- * Updates *destination with new_value and returns true if it was changed or false
- * if it was the same
- *
- */
-static bool update_if_necessary(uint32_t *destination, const uint32_t new_value) {
-        uint32_t old_value = *destination;
-
-        return ((*destination = new_value) != old_value);
-}
-
 /*
  * Gets the unoccupied space (= space which is available for windows which were resized by the user)
  * for the given row. This is necessary to render both, customly resized windows and never touched

src/util.c

@@ -46,6 +46,17 @@ int max(int a, int b) {
         return (a > b ? a : b);
 }
 
+/*
+ * Updates *destination with new_value and returns true if it was changed or false
+ * if it was the same
+ *
+ */
+bool update_if_necessary(uint32_t *destination, const uint32_t new_value) {
+        uint32_t old_value = *destination;
+
+        return ((*destination = new_value) != old_value);
+}
+
 /*
  * The s* functions (safe) are wrappers around malloc, strdup, …, which exits if one of
  * the called functions returns NULL, meaning that there is no more memory available