lib: os: add final else where missing in cbprintf_*

cbprintf_* had several places missing final elsestatement in the
if else if construct. This commit adds else {} to comply with
coding guideline 15.7.

Signed-off-by: Jennifer Williams <jennifer.m.williams@intel.com>

Author: jenmwms

lib/os/cbprintf_complete.c

@@ -557,6 +557,8 @@ static inline const char *extract_specifier(struct conversion *conv,
 			default:
 				break;
 			}
+		} else {
+			;
 		}
 		break;
 
@@ -586,6 +588,8 @@ static inline const char *extract_specifier(struct conversion *conv,
 		} else if ((conv->length_mod != LENGTH_NONE)
 			   && (conv->length_mod != LENGTH_UPPER_L)) {
 			conv->invalid = true;
+		} else {
+			;
 		}
 
 		break;
@@ -802,6 +806,8 @@ static char *encode_uint(uint_value_type value,
 			conv->altform_0 = true;
 		} else if (radix == 16) {
 			conv->altform_0c = true;
+		} else {
+			;
 		}
 	}
 
@@ -878,6 +884,8 @@ static char *encode_float(double value,
 		*sign = '+';
 	} else if (conv->flag_space) {
 		*sign = ' ';
+	} else {
+		;
 	}
 
 	/* Extract the non-negative offset exponent and fraction.  Record
@@ -1392,6 +1400,8 @@ int cbvprintf(cbprintf_cb out, void *ctx, const char *fp, va_list ap)
 			}
 		} else if (conv->width_present) {
 			width = conv->width_value;
+		} else {
+			;
 		}
 
 		/* If dynamic precision is specified, process it, otherwise
@@ -1408,6 +1418,8 @@ int cbvprintf(cbprintf_cb out, void *ctx, const char *fp, va_list ap)
 			}
 		} else if (conv->prec_present) {
 			precision = conv->prec_value;
+		} else {
+			;
 		}
 
 		/* Reuse width and precision memory in conv for value

lib/os/cbprintf_nano.c

@@ -204,6 +204,8 @@ int cbvprintf(cbprintf_cb out, void *ctx, const char *fmt, va_list ap)
 			} else if (special == '+') {
 				prefix = "+";
 				min_width--;
+			} else {
+				;
 			}
 			data_len = convert_value(d, 10, 0, buf + sizeof(buf));
 			data = buf + sizeof(buf) - data_len;