Kernel: Remove some more harmless InodeVMObject miscasts

Kernel/Process.cpp

@@ -541,7 +541,7 @@ int Process::sys$mprotect(void* addr, size_t size, int prot)
         if (whole_region->access() == prot_to_region_access_flags(prot))
             return 0;
         if (whole_region->vmobject().is_inode()
-            && !validate_inode_mmap_prot(*this, prot, static_cast<const SharedInodeVMObject&>(whole_region->vmobject()).inode(), whole_region->is_shared())) {
+            && !validate_inode_mmap_prot(*this, prot, static_cast<const InodeVMObject&>(whole_region->vmobject()).inode(), whole_region->is_shared())) {
             return -EACCES;
         }
         whole_region->set_readable(prot & PROT_READ);
@@ -560,7 +560,7 @@ int Process::sys$mprotect(void* addr, size_t size, int prot)
         if (old_region->access() == prot_to_region_access_flags(prot))
             return 0;
         if (old_region->vmobject().is_inode()
-            && !validate_inode_mmap_prot(*this, prot, static_cast<const SharedInodeVMObject&>(old_region->vmobject()).inode(), old_region->is_shared())) {
+            && !validate_inode_mmap_prot(*this, prot, static_cast<const InodeVMObject&>(old_region->vmobject()).inode(), old_region->is_shared())) {
             return -EACCES;
         }
 

Kernel/VM/Region.cpp

@@ -146,7 +146,7 @@ size_t Region::amount_dirty() const
 {
     if (!vmobject().is_inode())
         return amount_resident();
-    return static_cast<const SharedInodeVMObject&>(vmobject()).amount_dirty();
+    return static_cast<const InodeVMObject&>(vmobject()).amount_dirty();
 }
 
 size_t Region::amount_resident() const