COMPMID-2177 Fix clang warnings

Change-Id: I78039db8c58d7b14a042c41e54c25fb9cb509bf7
Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Reviewed-on: https://review.mlplatform.org/c/1092
Reviewed-by: VidhyaSudhan Loganathan <vidhyasudhan.loganathan@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/runtime/NEON/functions/NEConcatenateLayer.cpp b/src/runtime/NEON/functions/NEConcatenateLayer.cpp
index b8cfa2b..71af560 100644
--- a/src/runtime/NEON/functions/NEConcatenateLayer.cpp
+++ b/src/runtime/NEON/functions/NEConcatenateLayer.cpp
@@ -51,6 +51,7 @@
     _num_inputs = inputs_vector.size();
 
     std::vector<ITensorInfo *> inputs_vector_info;
+    inputs_vector_info.reserve(_num_inputs);
     for(unsigned int i = 0; i < _num_inputs; ++i)
     {
         ARM_COMPUTE_ERROR_ON_NULLPTR(inputs_vector.at(i));