Fix GH-12273 - configure __builtin_cpu_init() check

__builtin_cpu_init() is documented as having a void return type.  It happens to
return int on gcc, but is void on clang.

Close GH-122274

Author: Freaky

NEWS

@@ -9,10 +9,9 @@ PHP                                                                        NEWS
     warning). (Girgias)
   . Fixed bug GH-12215 (Module entry being overwritten causes type errors in
     ext/dom). (nielsdos)
-
-- Core:
   . Fixed bug GH-12207 (memory leak when class using trait with doc block).
     (rioderelfte)
+  . Fixed bug GH-12273 (__builtin_cpu_init check). (Freaky)
 
 - Filter:
   . Fix explicit FILTER_REQUIRE_SCALAR with FILTER_CALLBACK (ilutov)

build/php.m4

@@ -2713,7 +2713,7 @@ AC_DEFUN([PHP_CHECK_BUILTIN_CPU_INIT], [
   AC_MSG_CHECKING([for __builtin_cpu_init])
 
   AC_LINK_IFELSE([AC_LANG_PROGRAM([], [[
-    return __builtin_cpu_init()? 1 : 0;
+    __builtin_cpu_init();
   ]])], [
     have_builtin_cpu_init=1
     AC_MSG_RESULT([yes])