fix: multiple source copy

Author: marco-ippolito

tools/dep_updaters/update-histogram.sh

@@ -51,17 +51,10 @@ rm "$HISTOGRAM_TARBALL"
 
 mv "HdrHistogram_c-$NEW_VERSION" histogram
 
-cp "$WORKSPACE/histogram/include/hdr/hdr_histogram_version.h" "$DEPS_DIR/histogram/include/hdr"
+cp "$WORKSPACE/histogram/include/hdr/hdr_histogram_version.h" "$WORKSPACE/histogram/include/hdr/hdr_histogram.h" "$DEPS_DIR/histogram/include/hdr"
 
-cp "$WORKSPACE/histogram/include/hdr/hdr_histogram.h" "$DEPS_DIR/histogram/include/hdr"
+cp "$WORKSPACE/histogram/src/hdr_atomic.h" "$WORKSPACE/histogram/src/hdr_malloc.h" "$WORKSPACE/histogram/src/hdr_tests.h" "$WORKSPACE/histogram/src/hdr_histogram.c" "$DEPS_DIR/histogram/src"
 
-cp "$WORKSPACE/histogram/src/hdr_atomic.h" "$DEPS_DIR/histogram/src"
-
-cp "$WORKSPACE/histogram/src/hdr_malloc.h" "$DEPS_DIR/histogram/src"
-
-cp "$WORKSPACE/histogram/src/hdr_tests.h" "$DEPS_DIR/histogram/src"
-
-cp "$WORKSPACE/histogram/src/hdr_histogram.c" "$DEPS_DIR/histogram/src"
 
 echo "All done!"
 echo ""