chore: miscellaneous fix in C code (#1766)

Author: alexandre-daubois

frankenphp.c

@@ -775,6 +775,11 @@ static void frankenphp_register_variables(zval *track_vars_array) {
   /* In worker mode we cache the os environment */
   if (os_environment == NULL) {
     os_environment = malloc(sizeof(zval));
+    if (os_environment == NULL) {
+      php_error(E_ERROR, "Failed to allocate memory for os_environment");
+
+      return;
+    }
     array_init(os_environment);
     get_full_env(os_environment);
     // php_import_environment_variables(os_environment);

frankenphp.h

@@ -1,5 +1,5 @@
-#ifndef _FRANKENPPHP_H
-#define _FRANKENPPHP_H
+#ifndef _FRANKENPHP_H
+#define _FRANKENPHP_H
 
 #include <Zend/zend_modules.h>
 #include <Zend/zend_types.h>

types.c

@@ -18,5 +18,5 @@ void *__emalloc__(size_t size) { return emalloc(size); }
 
 void __zend_hash_init__(HashTable *ht, uint32_t nSize, dtor_func_t pDestructor,
                         bool persistent) {
-  zend_hash_init(ht, nSize, null, pDestructor, persistent);
+  zend_hash_init(ht, nSize, NULL, pDestructor, persistent);
 }