[Sema] Fixes -Wrange-loop-analysis warnings

This avoids new warnings due to D68912 adds -Wrange-loop-analysis to -Wall.

Differential Revision: https://reviews.llvm.org/D71529
diff --git a/clang/lib/Sema/AnalysisBasedWarnings.cpp b/clang/lib/Sema/AnalysisBasedWarnings.cpp
index 2c70c05..04611da 100644
--- a/clang/lib/Sema/AnalysisBasedWarnings.cpp
+++ b/clang/lib/Sema/AnalysisBasedWarnings.cpp
@@ -1174,7 +1174,7 @@
     // We analyze lambda bodies separately. Skip them here.
     bool TraverseLambdaExpr(LambdaExpr *LE) {
       // Traverse the captures, but not the body.
-      for (const auto &C : zip(LE->captures(), LE->capture_inits()))
+      for (const auto C : zip(LE->captures(), LE->capture_inits()))
         TraverseLambdaCapture(LE, &std::get<0>(C), std::get<1>(C));
       return true;
     }