bug #18399 [Intl] Fix int32 min boundary check (nicolas-grekas)

This PR was merged into the 3.0 branch.

Discussion
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[Intl] Fix int32 min boundary check

| Q             | A
| ------------- | ---
| Branch?       | 3.0
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

This is the right fix, introduced in a bad merge.

Commits
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f29476e [Intl] Fix int32 min boundary check

src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php

@@ -851,7 +851,7 @@ private function getInt64Value($value)
             return false;
         }
 
-        if (PHP_INT_SIZE !== 8 && ($value > self::$int32Max || $value <= -self::$int32Max - 1)) {
+        if (PHP_INT_SIZE !== 8 && ($value > self::$int32Max || $value < -self::$int32Max - 1)) {
             return (float) $value;
         }