[clang] [openmp] [OpenMP][Fix] Fix test initializations (PR #74797)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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``````````bash
git-clang-format --diff 4162a9bca42a1152cdf4ae92ff7b90351c10f332 144d2ad42f5b8c9b89881d6238684cfd799a8270 -- clang/test/OpenMP/map_struct_ordering.cpp openmp/libomptarget/test/offloading/struct_mapping_with_pointers.cpp clang/lib/CodeGen/CGOpenMPRuntime.cpp openmp/libomptarget/test/offloading/back2back_distribute.c
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/openmp/libomptarget/test/offloading/back2back_distribute.c b/openmp/libomptarget/test/offloading/back2back_distribute.c
index 17eb6127f0..30cdd69776 100644
--- a/openmp/libomptarget/test/offloading/back2back_distribute.c
+++ b/openmp/libomptarget/test/offloading/back2back_distribute.c
@@ -22,8 +22,7 @@ int main(int argc, char *argv[]) {
   double * b = (double *) malloc(MAX_N * sizeof(double));
   double * c = (double *) malloc(MAX_N * sizeof(double));
 
-
-  for (int i = 0 ; i < MAX_N ; i++) {
+  for (int i = 0; i < MAX_N; i++) {
     d[i] = d_h[i] = a_h[i] = 0.0;
   }
 

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https://github.com/llvm/llvm-project/pull/74797