PHPC-1166: Don't assume true is defined in phongo_compat.h

This fixes a build failure introduced by 197f3f7 in #835.

Author: jmikola

phongo_compat.h

@@ -138,7 +138,7 @@
 	} while (0)
 #define phongo_free_object_arg void
 #define phongo_zpp_char_len int
-#define ZEND_HASH_APPLY_PROTECTION(ht) true
+#define ZEND_HASH_APPLY_PROTECTION(ht) 1
 #define ZEND_HASH_GET_APPLY_COUNT(ht) ((ht)->nApplyCount)
 #define ZEND_HASH_DEC_APPLY_COUNT(ht) ((ht)->nApplyCount -= 1)
 #define ZEND_HASH_INC_APPLY_COUNT(ht) ((ht)->nApplyCount += 1)