Remove unneeded continue/return statements

Change-Id: I26f9845b09ecc15de8b6e0213ab369b386194c9d

includes/Storage/SqlBlobStore.php

@@ -373,7 +373,6 @@ class SqlBlobStore implements IDBAccessObject, BlobStore {
 				$errors[$blobAddress] = "Unknown blob address schema: $schema."
 					. ' Use findBadBlobs.php to remedy.';
 				$result[$blobAddress] = false;
-				continue;
 			}
 		}
 

includes/installer/PostgresUpdater.php

@@ -861,8 +861,6 @@ END;
 		$fi = $this->db->fieldInfo( $table, $field );
 		if ( $fi === null ) {
 			$this->output( "...$table table does not contain $field field.\n" );
-
-			return;
 		} else {
 			$this->output( "Dropping column '$table.$field'\n" );
 			$table = $this->db->addIdentifierQuotes( $table );
@@ -874,8 +872,6 @@ END;
 		$fi = $this->db->fieldInfo( $table, $field );
 		if ( $fi !== null ) {
 			$this->output( "...column '$table.$field' already exists\n" );
-
-			return;
 		} else {
 			$this->output( "Adding column '$table.$field'\n" );
 			$table = $this->db->addIdentifierQuotes( $table );

includes/media/GIFMetadataExtractor.php

@@ -238,7 +238,6 @@ class GIFMetadataExtractor {
 						// unrecognized extension block
 						fseek( $fh, -( $blockLength + 1 ), SEEK_CUR );
 						self::skipBlock( $fh );
-						continue;
 					}
 				} else {
 					self::skipBlock( $fh );

includes/skins/Skin.php

@@ -1816,8 +1816,6 @@ abstract class Skin extends ContextSource {
 						'id' => Sanitizer::escapeIdForAttribute( 'n-' . strtr( $line[1], ' ', '-' ) ),
 						'active' => false,
 					], $extraAttribs );
-				} else {
-					continue;
 				}
 			}
 		}

maintenance/fixTimestamps.php

@@ -87,11 +87,9 @@ class FixTimestamps extends Maintenance {
 				// Monotonic change
 				$lastNormal = $timestamp;
 				++$numGoodRevs;
-				continue;
 			} elseif ( abs( $delta ) <= $grace ) {
 				// Non-monotonic change within grace interval
 				++$numGoodRevs;
-				continue;
 			} else {
 				// Non-monotonic change larger than grace interval
 				$badRevs[] = $row->rev_id;