Remove trailing whitespace in test.

test/libyul/FunctionSideEffects.cpp

@@ -87,7 +87,7 @@ TestCase::TestResult FunctionSideEffects::run(ostream& _stream, string const& _l
 
 	m_obtainedResult.clear();
 	for (auto const& fun: functionSideEffectsStr)
-		m_obtainedResult += fun.first + ": " + fun.second + "\n";
+		m_obtainedResult += fun.first + ":" + (fun.second.empty() ? "" : " ") + fun.second + "\n";
 
 	if (m_expectation != m_obtainedResult)
 	{

test/libyul/functionSideEffects/cyclic_graph.yul

@@ -5,6 +5,6 @@
 }
 // ----
 // : movable, sideEffectFree, sideEffectFreeIfNoMSize
-// a: 
-// b: 
-// c: 
+// a:
+// b:
+// c:

test/libyul/functionSideEffects/doubly_recursive_function.yul

@@ -4,5 +4,5 @@
 }
 // ----
 // : movable, sideEffectFree, sideEffectFreeIfNoMSize
-// a: 
-// b: 
+// a:
+// b:

test/libyul/functionSideEffects/recursive_function.yul

@@ -3,4 +3,4 @@
 }
 // ----
 // : movable, sideEffectFree, sideEffectFreeIfNoMSize
-// a: 
+// a:

test/libyul/functionSideEffects/with_loop.yul

@@ -4,6 +4,6 @@
   pop(f())
 }
 // ----
-// : 
-// f: 
-// g: 
+// :
+// f:
+// g: