fix ncuriparse error,Correctly remove leading and trailing whitespace

[ShawayL]

fix ncuriparse error,Correctly remove leading and trailing whitespace.
When I use netcdf-c to connect to the nc file at the following path (D:/文档/test.nc), netcdf-c prompts me with a parameter error. After my investigation, I found that the error is caused by the ncuriparse function incorrectly interpreting the file path as a URI.

[CLAassistant]

All committers have signed the CLA.

[DennisHeimbigner]

Shouldn't this line:
while(*(q - 1) == ' ' && (q - 1) >= uri) q--;
be
while((q - 1) >= uri && *(q - 1) == ' ') q--;

[ShawayL]

Shouldn't this line: be while(*(q - 1) == ' ' && (q - 1) >= uri) q--; while((q - 1) >= uri && *(q - 1) == ' ') q--;

Thank you. I have fixed the issue.