Fix/evm 719

[rachit77]

Description

This PR solved the nil pointer dereference issue for PeerMap

Logs of the noticed behavior:

[WARN]  polygon.server.syncer.sync-peer-client: failed to get status from a peer, skip: id=16Uiu2HAmEKVGNXmVM6gMwL9XBLc1LmS1cCWMBdnwVvKJwmJegUSf err="rpc error: code = Unavailable desc = connection error: desc = \"error reading server preface: stream reset\""
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x15a5759]

Jira Issue:Here

Changes include

• Bugfix (non-breaking change that solves an issue)
• Hotfix (change that solves an urgent issue, and requires immediate attention)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)

Checklist

• I have assigned this PR to myself
• I have added at least 1 reviewer
• I have added the relevant labels
• I have updated the official documentation
• I have added sufficient documentation in code

Testing

• I have tested this code with the official test suite
• I have tested this code manually

[vcastellm]

LGTM