Fix misc 21 (#1573)

* Make `sNew` in (unused) `code_800FC620.c` a string

It is passed as a filename to `__osMallocDebug` so should be a nul-terminated string, not a char[3] missing an explicit \0

* Fix gcc warning in `JpegDecoder_ParseNextSymbol` about SLL on negative value

-1U is an unsigned value, aka 0xFFFFFFFF
I keep -1 because it seems that's what a jpeg standard has too

References:
https://stackoverflow.com/questions/40508958/shifting-a-negative-signed-value-is-undefined
https://www.w3.org/Graphics/JPEG/itu-t81.pdf (page 105, figure F.12)

* Small cleanup

* Fix few mistakes (thanks gcc warnings)

* Add `@bug` in file select settings draw code, using the wrong array

* format

* format main

* rename arg for a happy formatter

* Move important function call out of a printf

src/code/code_800FC620.c

@@ -13,7 +13,7 @@ typedef struct InitFunc {
 // .data
 void* sInitFuncs = NULL;
 
-char sNew[] = { 'n', 'e', 'w' };
+char sNew[] = "new";
 
 char D_80134488[0x18] = {
     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7F, 0x80, 0x00, 0x00,
@@ -100,7 +100,7 @@ void func_800FCB34(void) {
         initFunc = (InitFunc*)((s32)initFunc + nextOffset);
 
         if (initFunc->func != NULL) {
-            (*initFunc->func)();
+            initFunc->func();
         }
 
         nextOffset = initFunc->nextOffset;