fix: prevent NPE in validateDouble/validateFloat when input is null#6855

anuragg-saxenaa wants to merge 2 commits intoaws:masteraws/aws-sdk-java-v2:masterfrom

anuragg-saxenaa:fix/issue-6639-validate-double-null-npeanuragg-saxenaa/aws-sdk-java-v2:fix/issue-6639-validate-double-null-npeCopy head branch name to clipboard