backends: speedo: Fix memory reallocation size
The reallocation needs to add enough room to add this to signal_name:
'.' + key + '\0'
So the reallocation must be strlen(signal_name) + strlen(key) + 1 ('.') + 1 ('\0')
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The reallocation needs to add enough room to add this to signal_name:
'.' + key + '\0'
So the reallocation must be strlen(signal_name) + strlen(key) + 1 ('.') + 1 ('\0')