Update Nanosvg to the most recent version.

This should fix a Nanosvg issue.
Fix a typo in NEWS.md.

Author: daute

NEWS.md

@@ -1,6 +1,6 @@
 # Current development version
 
-- Remove the change label witdth popup menu (#1964)
+- Remove the change label width popup menu (#1964).
   It was not working at all and caused crashes. And I think the
   label width is not changed so often, so that a (working)
   possibility in the configuration menu is enough.

src/nanoSVG/README.txt

@@ -1,2 +1,2 @@
 These files are from https://github.com/memononen/nanosvg/
-(current commit: 93ce879dc4c04a3ef1758428ec80083c38610b1f)
+(current commit: ea6a6aca009422bba0dbad4c80df6e6ba0c82183)

src/nanoSVG/nanosvg.h

@@ -1265,7 +1265,7 @@ static unsigned int nsvg__parseColorRGB(const char* str)
 				while (*str && nsvg__isdigit(*str)) str++;	// skip fractional part
 			}
 			if (*str == '%') str++; else break;
-			while (nsvg__isspace(*str)) str++;
+			while (*str && nsvg__isspace(*str)) str++;
 			if (*str == delimiter[i]) str++;
 			else break;
 		}