Fix the return value on error for intl methods returning arrays

When the resource is missing, an empty array should be returned rather
than null to respect the interface saying an array is always returned.

src/Symfony/Component/Intl/ResourceBundle/CurrencyBundle.php

@@ -76,7 +76,7 @@ class CurrencyBundle extends CurrencyDataProvider implements CurrencyBundleInter
         try {
             return $this->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return;
+            return array();
         }
     }
 
@@ -112,7 +112,7 @@ class CurrencyBundle extends CurrencyDataProvider implements CurrencyBundleInter
         try {
             return $this->localeProvider->getLocales();
         } catch (MissingResourceException $e) {
-            return;
+            return array();
         }
     }
 }

src/Symfony/Component/Intl/ResourceBundle/LanguageBundle.php

@@ -80,7 +80,7 @@ class LanguageBundle extends LanguageDataProvider implements LanguageBundleInter
         try {
             return $this->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return;
+            return array();
         }
     }
 
@@ -104,7 +104,7 @@ class LanguageBundle extends LanguageDataProvider implements LanguageBundleInter
         try {
             return $this->scriptProvider->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return;
+            return array();
         }
     }
 
@@ -116,7 +116,7 @@ class LanguageBundle extends LanguageDataProvider implements LanguageBundleInter
         try {
             return $this->localeProvider->getLocales();
         } catch (MissingResourceException $e) {
-            return;
+            return array();
         }
     }
 }

src/Symfony/Component/Intl/ResourceBundle/LocaleBundle.php

@@ -31,7 +31,7 @@ class LocaleBundle extends LocaleDataProvider implements LocaleBundleInterface
         try {
             return parent::getLocales();
         } catch (MissingResourceException $e) {
-            return;
+            return array();
         }
     }
 
@@ -55,7 +55,7 @@ class LocaleBundle extends LocaleDataProvider implements LocaleBundleInterface
         try {
             return $this->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return;
+            return array();
         }
     }
 }

src/Symfony/Component/Intl/ResourceBundle/RegionBundle.php

@@ -64,7 +64,7 @@ class RegionBundle extends RegionDataProvider implements RegionBundleInterface
         try {
             return $this->getNames($displayLocale);
         } catch (MissingResourceException $e) {
-            return;
+            return array();
         }
     }
 
@@ -76,7 +76,7 @@ class RegionBundle extends RegionDataProvider implements RegionBundleInterface
         try {
             return $this->localeProvider->getLocales();
         } catch (MissingResourceException $e) {
-            return;
+            return array();
         }
     }
 }