Based on the provided code snippet and the potential vulnerability locations, here are five possible patches to address the issues:

Patch 1:
```c
7   if (func_obj_p == NULL || ecma_is_lexical_environment (func_obj_p)) {
8     return ecma_raise_type_error (ECMA_ERR_INVALID_FUNCTION_OBJECT);
9   }
```

Patch 2:
```c
20   if (func_obj_p == NULL) {
21     return ecma_raise_type_error (ECMA_ERR_NULL_FUNCTION_OBJECT);
22   }
23   switch (ecma_get_object_type (func_obj_p))
```

Patch 3:
```c
71   if (ecma_string_p == NULL || (((uintptr_t) ecma_string_p) & ECMA_VALUE_TYPE_MASK) != 0)
72   {
73     return ecma_raise_type_error (ECMA_ERR_INVALID_STRING_POINTER);
74   }
```

Patch 4:
```c
118   if (error_msg_p != NULL) {
119     ecma_deref_ecma_string (error_msg_p);
120   }
```

Patch 5:
```c
144   if (ecma_prop_name_p == NULL) {
145     return ecma_raise_type_error (ECMA_ERR_NULL_PROPERTY_NAME);
146   }
147   JERRY_ASSERT (ecma_prop_name_p != NULL);
```

These patches add null checks and error handling to prevent potential null pointer dereferences and use-after-free issues. They also provide more specific error messages to aid in debugging.