Fix app heap corrupted unchecked issue (#788)

Check whether app heap is corrupted in gc_migrate() and gci_dump(),
and handle the failures in wasm/aot_enlarge_memory().

core/iwasm/common/wasm_runtime_common.c

@@ -4211,3 +4211,14 @@ fail:
         wasm_runtime_free(results);
     return ret;
 }
+
+void
+wasm_runtime_show_app_heap_corrupted_prompt()
+{
+    LOG_ERROR("Error: app heap is corrupted, if the wasm file "
+              "is compiled by wasi-sdk-12.0 or higher version, "
+              "please add -Wl,--export=malloc -Wl,--export=free "
+              "to export malloc and free functions. If it is "
+              "compiled by asc, please add --exportRuntime to "
+              "export the runtime helpers.");
+}