tests: Fixed typos

Signed-off-by: Maxim Logaev <maxlogaev@proton.me>

tests/hello.c

@@ -1,10 +1,8 @@
 #include <stdio.h>
-#include <errno.h>
 
 int
 main ()
 {
-  errno = ENOSYS;
   puts ("I: Hello KolibriOS from GCC!");
   return 0;
 }

tests/malloc.c

@@ -21,8 +21,8 @@ main ()
   for (size_t i = 0; i < 1000; i++)
     {
       void *ptr = malloc (9999);
-      memset (ptr, 0xFF, 9999);
       assert (ptr != NULL);
+      memset (ptr, 0xFF, 9999);
       free (ptr);
     }
 
@@ -37,9 +37,9 @@ main ()
   // free()
   for (size_t i = 0; i < MAX_ALLOCS; i++)
     {
-        free(allocs[i]);
+      free (allocs[i]);
     }
 
-  _ksys_dbg_print("I: Malloc test: OK");
+  _ksys_dbg_print ("I: Malloc test: OK");
   return 0;
 }