refactor: remove trailing whitespace from C, Header, Ruby and YAML files

Lint

src/class.c

@@ -1458,7 +1458,7 @@ fix_prepend_module(mrb_state *mrb, struct RBasic *obj, void *data)
       if (p->tt == MRB_TT_CLASS) break;
       if (p->c == m[0]) {
         include_module_at(mrb, ins_pos, ins_pos, m[1], 0);
-        break; 
+        break;
       }
       c = p;
       p = p->super;

src/dump.c

@@ -138,7 +138,7 @@ get_pool_block_size(mrb_state *mrb, const mrb_irep *irep)
 #endif
       break;
 
-    default: /*  packed IREP_TT_STRING */ 
+    default: /*  packed IREP_TT_STRING */
       {
         mrb_int len = irep->pool[pool_no].tt >> 2; /* unpack length */
         mrb_assert_int_fit(mrb_int, len, size_t, SIZE_MAX);
@@ -961,7 +961,7 @@ dump_pool(mrb_state *mrb, const mrb_pool_value *p, FILE *fp)
 }
 
 mrb_bool mrb_sym_static_p(mrb_state *mrb, mrb_sym sym);
-  
+
 static int
 dump_sym(mrb_state *mrb, mrb_sym sym, FILE *fp)
 {

src/numeric.c

@@ -75,7 +75,7 @@ int_pow(mrb_state *mrb, mrb_value x)
 #ifndef MRB_NO_FLOAT
   mrb_value y = mrb_get_arg1(mrb);
   mrb_float z;
- 
+
   if (!mrb_integer_p(y)) {
     mrb_get_args(mrb, "f", &z);
     z = pow((mrb_float)base, z);