Port member initialization from constructor to declaration (C++11)

Using `clang-tidy`'s `modernize-use-default-member-init` check and
manual review of the changes, and some extra manual changes that
`clang-tidy` failed to do.

Also went manually through all of `core` to find occurrences that
`clang-tidy` couldn't handle, especially all initializations done
in a constructor without using initializer lists.

1 files changed, 4 insertions, 8 deletions

diff --git a/core/print_string.h b/core/print_string.h
index d83cc35dd6..3e9125bddc 100644
--- a/core/print_string.h
+++ b/core/print_string.h
@@ -39,16 +39,12 @@ typedef void (*PrintHandlerFunc)(void *, const String &p_string, bool p_error);
 
 struct PrintHandlerList {
 
-	PrintHandlerFunc printfunc;
-	void *userdata;
+	PrintHandlerFunc printfunc = nullptr;
+	void *userdata = nullptr;
 
-	PrintHandlerList *next;
+	PrintHandlerList *next = nullptr;
 
-	PrintHandlerList() {
-		printfunc = 0;
-		next = 0;
-		userdata = 0;
-	}
+	PrintHandlerList() {}
 };
 
 void add_print_handler(PrintHandlerList *p_handler);