fix: Fix new psalm errors from update

Not sure about the SimpleContainer modification, let’s see what CI says
 about that.

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

3 files changed, 3 insertions, 12 deletions

diff --git a/lib/private/DB/QueryBuilder/Literal.php b/lib/private/DB/QueryBuilder/Literal.php
index b4e8a36b86f..321a836abc7 100644
--- a/lib/private/DB/QueryBuilder/Literal.php
+++ b/lib/private/DB/QueryBuilder/Literal.php
@@ -32,10 +32,7 @@ class Literal implements ILiteral {
 		$this->literal = $literal;
 	}
 
-	/**
-	 * @return string
-	 */
-	public function __toString() {
+	public function __toString(): string {
 		return (string) $this->literal;
 	}
 }
diff --git a/lib/private/DB/QueryBuilder/Parameter.php b/lib/private/DB/QueryBuilder/Parameter.php
index b6cfa844e01..148580447bd 100644
--- a/lib/private/DB/QueryBuilder/Parameter.php
+++ b/lib/private/DB/QueryBuilder/Parameter.php
@@ -31,10 +31,7 @@ class Parameter implements IParameter {
 		$this->name = $name;
 	}
 
-	/**
-	 * @return string
-	 */
-	public function __toString() {
+	public function __toString(): string {
 		return (string) $this->name;
 	}
 }
diff --git a/lib/private/DB/QueryBuilder/QueryFunction.php b/lib/private/DB/QueryBuilder/QueryFunction.php
index 41798f233cd..c0fd38150ef 100644
--- a/lib/private/DB/QueryBuilder/QueryFunction.php
+++ b/lib/private/DB/QueryBuilder/QueryFunction.php
@@ -31,10 +31,7 @@ class QueryFunction implements IQueryFunction {
 		$this->function = $function;
 	}
 
-	/**
-	 * @return string
-	 */
-	public function __toString() {
+	public function __toString(): string {
 		return (string) $this->function;
 	}
 }