ompi/tools/wrappers/ompi_wrapper_script.in: fix variable name typo

When open-mpi is compiled with script wrapper compilers option:

    ./configure --enable-script-wrapper-compilers ...

The generated wrappers emit warnings:

    Name "main::wrapper_cflags_prefix" used only once: possible typo at ./mpicc line 104.

Commit 1f18b20
"wrappers: Improve static library handling" introduced new global
variables prefixed with "wrapper_". The declaration of
"$wrapper_cflags_prefix" was prefixed twice.

This commit fixes this issue by correctly naming the variable.

Signed-off-by: Julien Olivain <[email protected]>

Author: jolivain

ompi/tools/wrappers/ompi_wrapper_script.in

@@ -39,7 +39,7 @@ my $CXX = "@CXX@";
 my $FC = "@FC@";
 my $wrapper_cppflags = "@OMPI_WRAPPER_CPPFLAGS@";
 my $wrapper_cflags = "@OMPI_WRAPPER_CFLAGS@";
-my $wrapper_wrapper_cflags_prefix = "@OMPI_WRAPPER_CFLAGS_PREFIX@";
+my $wrapper_cflags_prefix = "@OMPI_WRAPPER_CFLAGS_PREFIX@";
 my $wrapper_cxxflags = "@OMPI_WRAPPER_CXXFLAGS@";
 my $wrapper_cxxflags_prefix = "@OMPI_WRAPPER_CXXFLAGS_PREFIX@";
 my $wrapper_fcflags = "@OMPI_WRAPPER_FCFLAGS@";