XMLValidationStep: Spaces in DTD path are not converted properly to URI

[ysavourel]

Space in the full path of the DTD (or other resource) does not get converted properly to a valid URI if it has space.

For example a resource "ref.dtd" in a file located in C:\New Folder will be converted to file:/C:/New Folder/ref.dtd, which is not valid.

So we get an error:

ERROR: Failed to construct URI for external subset, URL = file:/C:/New Folder/ref.dtd: Illegal character in path at index 12: file:/C:/New Folder/ref.dtd

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