Fix bug in VASP parameter parsing (#3870)

Co-authored-by: Matthew Horton <matthew.horton@microsoft.com>

pymatgen/io/vasp/outputs.py

@@ -722,6 +722,10 @@ def run_type(self) -> str:
 
         Hubbard U terms and vdW corrections are detected automatically as well.
         """
+
+        # Care should be taken: if a GGA tag is not specified, VASP will default
+        # to the functional specified by the POTCAR. It is not clear how
+        # VASP handles the "--" value.
         GGA_TYPES = {
             "RE": "revPBE",
             "PE": "PBE",
@@ -1356,7 +1360,9 @@ def _parse_params(self, elem: XML_Element) -> dict:
         """Parse INCAR parameters."""
         params: dict = {}
         for c in elem:
-            name = c.attrib.get("name", "")
+            # VASP 6.4.3 can add trailing whitespace
+            # for example, <i type="string" name="GGA    ">PE</i>
+            name = c.attrib.get("name", "").strip()
             if c.tag not in {"i", "v"}:
                 p = self._parse_params(c)
                 if name == "response functions":