Update some field accesses to new structures

Action.c

@@ -280,7 +280,7 @@ static Htop_Reaction actionExpandOrCollapse(State* st) {
 }
 
 static Htop_Reaction actionCollapseIntoParent(State* st) {
-   if (!st->settings->treeView) {
+   if (!st->settings->ss->treeView) {
       return HTOP_OK;
    }
    bool changed = collapseIntoParent(st->panel);

htop.c

@@ -205,7 +205,7 @@ int main(int argc, char** argv) {
    if (!flags.useColors) 
       settings->colorScheme = COLORSCHEME_MONOCHROME;
    if (flags.treeView)
-      settings->treeView = true;
+      settings->screens[0]->treeView = true;
 
    CRT_init(settings->delay, settings->colorScheme);
    

linux/LinuxProcess.c

@@ -186,7 +186,7 @@ typedef struct LinuxProcess_ {
 } LinuxProcess;
 
 #ifndef Process_isKernelThread
-#define Process_isKernelThread(_process) ((LinuxProcess*)(_process)->isKernelThread)
+#define Process_isKernelThread(_process) (((LinuxProcess*)(_process))->isKernelThread)
 #endif
 
 #ifndef Process_isUserlandThread