clang-format: Do not use two-argument/operand special case with no alignment

Without alignment, there is no clean separation between the arguments, even if
there are only two.

Before:
  aaaaaaaaaaaaaa(
      aaaaaaaaaaaa, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
          aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

After:
  aaaaaaaaaaaaaa(aaaaaaaaaaaa,
                 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa +
                     aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);

llvm-svn: 293875
diff --git a/clang/lib/Format/ContinuationIndenter.cpp b/clang/lib/Format/ContinuationIndenter.cpp
index a7eb82a..3a10065 100644
--- a/clang/lib/Format/ContinuationIndenter.cpp
+++ b/clang/lib/Format/ContinuationIndenter.cpp
@@ -429,7 +429,7 @@
     // does not help.
     bool HasTwoOperands =
         P->OperatorIndex == 0 && !P->NextOperator && !P->is(TT_ConditionalExpr);
-    if ((!BreakBeforeOperator && !HasTwoOperands) ||
+    if ((!BreakBeforeOperator && !(HasTwoOperands && Style.AlignOperands)) ||
         (!State.Stack.back().LastOperatorWrapped && BreakBeforeOperator))
       State.Stack.back().NoLineBreakInOperand = true;
   }